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LISTEN: Laura Diaz on how social and environmental stress impact children’s health

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Wednesday, October 23, 2024

Laura Diaz joins the Agents of Change in Environmental Justice podcast to discuss the intersection of social and environmental stressors on children’s health.Diaz, a current fellow and a Ph.D. student in Environmental Health Sciences at UC Berkeley, also talks about how her own childhood shaped her understanding of environmental injustice, and how being a mother has shaped her research – and her life.The Agents of Change in Environmental Justice podcast is a biweekly podcast featuring the stories and big ideas from past and present fellows, as well as others in the field. You can see all of the past episodes here.Listen below to our discussion with Diaz and subscribe to the podcast at iTunes or Spotify. Agents of Change in Environmental Justice · Laura Diaz on how social and environmental stress impact children’s healthTranscriptBrian BienkowskiLaura, how are you doing today?Laura Diaz I'm doing okay. How are youBrian Bienkowski I'm doing great. And where are you today?Laura Diaz I am in South San Francisco, which is close to the San Francisco International Airport.Brian Bienkowski Very cool. I love it out there. And you are from originally not far from there. So tell me a little bit about growing up in Northern California.Laura Diaz Yeah, so I grew up in the East San Francisco Bay Area, and specifically, it's like the geographic location where the watershed from the Sierra mountains meets the mouth of the San Francisco Bay, and it's beautiful. And just behind where the Bay is, there's these rolling golden hills. And because of the history that Pittsburgh has, which is my hometown, with the fossil fuel industry, and specifically during the Gold Rush, they were actually mining coal out there that laid the foundation for a polluting industry which persists today, and it's become one of the more affordable places in the San Francisco Bay area to live. And so I lived in between this corridor of polluting industry, right along that water, which included the Dow Chemical Plant, the power plant and several other toxic release facilities. And then on the other side of us was a highly trafficked freeway. And then we lived there until it was about four and then shortly after, we moved just over that same freeway, and the freeway was like legit our neighbors and the that whole corridor polluting industry was still an eye shot of where we lived. And those cities are largely known as commuter cities because they're so affordable. A lot of families move out there to raise their family, and that was true for my parents as well. So they commuted about an hour and a half, and so a lot of our childhood was spent largely unsupervised, and at some point, my parents decided to get us an inter-district transfer to the city where they worked. And so they worked in a city called wanna Creek, California, and that city is predominantly white and home to the uber rich. And I remember like, being at school and just feeling like I really didn't, like fit in. And it went beyond that, like kind of normal, like what I see with my son, where he's, like, trying to make friends and stuff. It went beyond that, like something just didn't fit. And I remember like, walking home from school, and I would have to walk through this outdoor plaza with stores like Neiman Marcus and Tiffany's and make my way to my dad's tailoring shop. And like, I remember opening the door, and I would get this like sense of relief, and I would feel like I could breathe again. And it was like home, and yet, I would see my dad on his hands and knees fixing the clothing of my classmates parents. And then every day we would take our trek back home. So we'd be going from this very affluent space, it was very green, a lot of open space back home, to this space where it's a lot of concrete, like again, we'd see, like, that whole polluting industry, and yet, like, I'd hop out of the car super excited, run to my neighbor's house and we'd be playing basketball for the rest of the evening. I have, like, so much love for where I grew up, and I feel like my work now is like. Of letter to my community, and I had this like daily reminder of the difference between wealth and poverty, between predominantly white communities and predominantly diverse communities.Brian Bienkowski Well, that's a really beautiful way to paint your hometown. I have to say, when I first looked it up, I was like, I did not know Laura was from Pittsburgh. When I met her, she seemed like she was from the West Coast, so I did not know that there was a Pittsburgh California. But thank you so much for painting that picture. And you, you know, you've mentioned this kind of industrial backdrop and maybe some social dynamics and racial dynamics at school that were uncomfortable. I'm wondering where along the way you became aware or interested in kind of the concept of environmental justice and injustice?Laura Diaz Yeah. So, I mean, like those, like, big smokes stacks, like, what we see in pictures a lot when we see, like, read articles about environmental justice, like, that was the backdrop to my childhood. And yet, I had no idea that that, that I grew up in an environmental justice community, right? So I am a former high school science and math teacher, and there was a summer where I did a professional development program in the topic of sustainability. It had it was there that I met Karna Wong, and she's a faculty at Sonoma State University, and she absolutely changed my life. She gave a workshop on environmental justice, and she taught us about the principles of environmental justice, various frameworks of EJ and her and I, like, hit it off like it was, it was great. This is why I love, like, professional development programs, which we can talk about later. But she also showed me this database called CalEnviroScreen, and that is, it's basically a map of California, and it displays community exposures to pollution, health burdens and demographic characteristics. And that was the first time that I saw my community in bright red, because bright red means more burdens. And then I saw Walnut Creek bright green, and bright green is associated with less burdens, or under-burden. And it just was like this final puzzle piece of like, like, whoa, everything came together. And I like, understood that that feeling of like something wasn't right made so much sense by looking at that map, and I realized that environmental justice wasn't only something I like, loved learning about, it also impacted my life. I don't know, and I'm never going to know, if growing up in close proximity to these facilities is a reason why I have two chronic autoimmune diseases, but it does drive my work. And I think also, in addition to that, there was another educator fellowship that I was on, and I did that with Earthwatch. We were out at catalea Island, and we were studying Harmful Algal Blooms. And while we were out there, my mom called me, and she was like, I made it out, but paradise is on fire. And that was in 2018 and although she made it out alive, 85 folks did not, and that was the campfire. And over 13,000 homes were lost in one of those of my mom's and it's like, it's hard to talk about this, but it's like, because it's so deeply personal, right? But I remember flying home from that experience and waiting outside of the airport and it was raining ash, and those ashes included my mom's home. So it's just the impacts of climate justice, and environmental justice has hit me, personally, very hard, and I think more recently, I've been really thinking about the connection between wildfires in California, the fossil fuel industry and our inability to transition away fast enough, and how my community is going to continue to pay the price until we do so. And that really drives the work that I do. And like you can hear my voice shaking, but it's like I have so much passion to you, and it's so important. There's, there's an urgency to this work that's needed that I'm I'm not quite sensing enough in the academic spheres that I'm in now, but I hope to be a part of that driving force.Brian Bienkowski And I've been asking everybody this question before we get into some of your your research and your education, what is a moment or event that has helped shape your identity?Laura Diaz Yeah, okay, I think there's a couple I feel like we're getting into, like, the intense stuff in the beginning. So like, Sorry my voice is shaking, but also self-deprecating humor is how I get. So, I think the first thing that really, really impacted like who I am and how I moved through this world, was when I was in ninth grade, my dad and I had to go to the county courthouse, and it was the first time that I saw my brother handcuffed. And we were there to see him and be there for him while he was going to be sentenced for his first felony. And I remember the judge asked his family to stand up those, those of us who were there in support. And I was bawling as my I was seeing my hero like out there behind a glass wall in handcuffs, and I was like, barely could stand up, and I was just tears were just rolling down my face, and, like, for the longest time, I thought it was actually my fault that he got sentenced, because I couldn't keep it together, right? It was just I was I must have been around 13, right? a kid. And I think during my adolescence, I really developed this, like, strong understanding of the impact of oppression on the lives of children, and it really is the root of how I move through the work that I do. And I think also kind of on a more tender side, a moment that really has shaped who I am, is being my son's mom, and the day I became his mom was the most beautiful day of my life. And I tell him often how lucky I am to be his mom, and I like to say that my most proudest title is being soccer mom. And I do know too that like the most important thing I can do, personally and professionally is invest in my son and my family.Brian Bienkowski Awesome. Well, thank you so much for both of those very we will get you away from these, all of these that are pulling at your emotions. Maybe we'll circle back and we'll get emotional again, but thank you so much for opening up about that. I'm sure there are others who can relate. And when you talk about tears streaming down, I was hoping my my blue light glasses were hiding we're hiding mine on that so, so let's change gears a little bit. And you went to so you mentioned Sonoma State University, which is now recognized as a Hispanic serving institution, and you went there for your undergraduate degree. So we've had folks on talking about going to historically Black colleges and kind of the impact that had on them and a level of comfort and that it brought them. So I was wondering if you could talk about that experience and how going to a Hispanic Serving Institution benefited you?Laura Diaz Yeah, I, I remember the first week being on campus and like, being overwhelmed with this, like, sense of hope. And I think, and it was great, like I felt like, you're saying, I just felt like safe, that that uncomfortable, like unwelcoming feeling that I felt when I was going to schools in Walnut Creek was like gone. And I knew that I was believed in and supported by by the faculty. The commitment to teaching excellence at HSIs is so high, and that's really impacted my teaching philosophy now, and I understand firsthand what it means like to create a vulnerable learning environment and what it means to like not be in one, right? And because I was able to really thrive in this space, I majored in Molecular Cell bio. I double minored in Chem and in music. I was part of the chamber music orchestra, like I was, like, loving life. It was great. And also, my junior year, it started getting sick, and I was having to walk to school with a cane, and I ended up getting diagnosed with lupus, and during that diagnosis period that was really difficult. And despite that, I knew that the faculty were there for me. I knew my classmates were there for me, and they really helped me push through a really, really difficult time for me. And so I just, I feel very committed to what education means, what that means for social mobility, and that's stayed with me. And continue, I continue to work and partner with Sonoma State, which is, yeah, really great.Brian Bienkowski Yeah, what a great opportunity. Do you still play music?Laura Diaz I don't, but I need to. I played the piano. Oh,Brian Bienkowski no, no, that's that was my next question. That's very cool. Yeah, I am a musician. I play a whole variety of instruments. And I've said on the podcast before that it just it feels like it is that other side of the brain. It just feels so good to take some time to stretch the create creative legs every now and then, after staring at a computer for so long. So I'm always curious.Laura Diaz Yeah, I hear that, and hopefully this inspires me to, like, get it together,Brian Bienkowski get back to it. Yeah. Well, I'm sure you have as we're gonna get into it sounds like we have plenty going on, but I hope you find some time. So now you are studying air pollution, specifically particulate matter burdes in marginalized communities. So particulate matter is linked to negative health outcomes, and one of them that you focus on is mitochondrial dysfunction. So can you explain first, what mitochondria are and how air pollution may affect them?Laura Diaz So mitochondria are these fascinating little organelles that I've been spending several years thinking about. They're the site of chemical energy production of our cells, so they make the energy that our cells need in order to actually function properly. And they're really unique. So they have their own DNA or their own genome, and in that, within that, it codes for 13 proteins which are vital for the mitochondria to be functioning properly. And what's interesting about that is that they they lack these protective mechanisms that, like our nuclear DNA has, and so it makes them particularly vulnerable to situations where our cells are undergoing stress, and we see that mitochondrial function declines with aging and also with disease. And what I spend a lot of time thinking about is what mitochondrial function or dysfunction looks like in epithelial cells. And those are the cell types that we find in the lining of our mouth. They're in our lungs, and there's like outer barrier of our skin, so they come in contact with this, like wild outer world, and play this really important protective mechanism, and they they play a big role in detoxification. And so what happens when they're exposed to particulate matter? There's actually an increase in free radicals in our in the cell, and those are called reactive oxygen species, and those, if there's too many and there's an imbalance, those can cause mitochondrial dysfunction, and that's what I'm spending a lot of time thinking about.Brian Bienkowski So if these mitochondria are disrupted in some way by and I should say particulate matter is fine particulate pollution. This can come from anything from wildfires to traffic to to heavy industry, fossil fuel burning, if the mitochondria are disrupted, what kind of impact may that have on, let's say, developing children?Laura Diaz Yeah, so I, my research focuses on child health, and again, I'm really thinking about these epithelial cells and what's happening in relation to the exposure of, like, what you're saying with particulate matter and and when we see that mitochondrial dysfunction, it actually triggers a cascade of events to happen in the cell. So the cell tries to fix these problems when they come up, but when it's constantly having to fix these problems, that's when, that's when, like, long-term issues can can arise. And so what we see is that the this outer lining of cells can be really impacted by mitochondrial dysfunction, because they they get put in this like pro-inflammatory state, and so then they become really vulnerable to things like allergens. So what I'm studying, then, is, is that mitochondrial dysfunction playing a role in the development of diseases like eczema or rhinitis or asthma among children in frontline environmental justice communities.Brian Bienkowski So as part of this, you're also looking at adverse childhood experience known as ACES, which was a new acronym for me after I met you at the retreat. That was something I didn't know about. So in addition to the air pollution and mitochondrial dysfunction, you're looking at aces. So can you explain aces and why you feel it's an important part of including in this research,Laura Diaz ACES stands for Adverse Childhood eEperiences. In California, there's a lot of work being done on the public health end of things, and it's getting labeled as toxic stress. What it is is it's a survey with 10 questions that assesses a child's exposure to abuse, neglect and household challenges. And back in the 90s, there was a groundbreaking study that was done, and they found that exposure to ACES was associated with increased risk of death from seven out of 10 of the leading causes of death and so and there's been a lot more work done now, but I really want to invite us all in, like environmental health work and environmental justice, to be thinking about day to day stress, and that exposure to stress as an environmental exposure, just like we would think about particulate matter. And in order to understand the impact of oppression and the health impacts living in frontline communities, I think it's really important that we also include exposure to stress. And what I've found in my research is that exposure to ACES is associated with an increase in mitochondrial dysfunction and so, and I'm seeing that among a cohort of children, right? So it like the changes that becomes embodied in our cells happens pretty quickly. It can at least.Brian Bienkowski So you're seeing that not only. So if there are these environmental insults, and then you pile on kind of just day to day stress in a child's life, whether that's from inside or outside of the home, the combination of those, they're both doing bad things at the cellular level, to the kid or to a child, and setting them up for potential increased illness.Laura Diaz Yeah, and I think, like, I'm really thinking about the mitochondria a lot, obviously, but if we think about being in a state of stress, where we're in this, like fight or flight, like our physiological response, our cells have an increased need of energy, and when that happens over and over and over again, then the mitochondria is being overworked. And so understanding what's happening at the cellular level is also really important.Brian Bienkowski v really fascinating research. And I love the idea of thinking more about stress, and of course, with your research with kids, but even for adults. I mean, I think stress is such a kind of a silent killer. I mean, it just, it's so bad for our body, and yet, a lot of us kind of live with it, and it's part of our, part of our life, so it's really important to to remember that. So I'm wondering, what are some of the next steps in this research? What would you like to do? What are you going to do? What are you working on?Laura Diaz Yeah, I think, like, I mean, I hope I can spend more time studying the mitochondria. I think, as is true for like, most folks in graduate school, really figuring out, like, where is my niche? Like, where is my lane? Like, I do hope that I get to spend quite a bit more time really deep diving into the mitochondria. Specifically, I'm really curious about what is happening and what other biomarkers are associated with this mitochondrial dysfunction, and also like mitochondrial mutations, which are pretty interesting to think about as well. So I'm kind of following, like what's happening in a molecular mechanism level.Brian Bienkowski Do you like doing research?Laura Diaz Yeah, I love it. Oh, I love it. Even, like and, and when I shouldn't say even, and when I was teaching, like, research was a big part of of my teaching practice with high schoolers. I have, I think this is like something that has been passed on from, from my family, for sure, but in my is just this love for learning and not being afraid of of kind of the unknown. Yeah.Brian Bienkowski So you mentioned earlier this kind of idea of being really interested in kind of professional development, and I know outside of your research, you're also, you're doing some other things, and you've you founded a nonprofit, the Educator Collective for Environmental Justice. So I was wondering if you could just tell us about that organization and why you started it?Laura Diaz Yeah, so when I met Karna Wong who, like, blew my mind about environmental justice and and really started supporting me on my journey through, like, integrating environmental justice in the classroom, I literally started writing curriculum for my class that evening, and I knew that there was a gap in environmental justice curriculum and training for educators at that time, and I was chosen to be a Science Friday educator collaborator, where I was able to actually publish my EJ curriculum, which was really cool. And I started getting invited to give conferences or talks at conferences, and I gave a talk at a climate solutions conference, and that's where I met Samra Pathania, who's also a high school teacher, and he is just as passionate about decarbonization and climate solutions. And so we spent that whole conference just like talking together and visioning together, like how we could create a space for professional development and like, almost like a grassroots movement building for educators around these topics of environmental justice and climate solutions. Because, just like, I have that really, like urgent sense to, like do something now, he's similar with decarbonization. And so originally, we started as a home for Educator professional development for again, EJ and climate solutions. And we actually grew really quickly, which was really cool and supported, started supporting youth. So we had a youth collective, which now we have two Youth Environmental Justice councils that we support. We have a cohort of educators that that we support in EJ and climate solutions and decarbonization. And then we also partner with communities. So we've given workshops to communities like building DIY indoor air filters and giving them like educational workshops around environmental justice. We partnered with promotoras and doing, like, some air pollution monitoring. So it's been this, like, really beautiful little space that that is is growing and thriving.Brian Bienkowski Excellent. And speaking of being too busy to play piano, you also co-founded the Partners for Equity and Research, which supports undergraduates doing community engaged research. So can you also talk about this, maybe a project or two that you've worked on there, and how you work to center community voices and experiences in that initiative?Laura Diaz Yeah, so maybe I could describe a little bit of like, our structure. It's a little bit like, yeah, has some moving pieces, but we are an environmental justice hub that's housed at Sonoma State University, and I co-lead that with Professor Daniel Soto, who's a department chair of Geography, Environment and Planning, and we train undergraduate researchers in community-driven research methods. So I like to think of it as a triangle, the way our partnership works. So we have the university and Dr. Soto's really important. Like, kind of the lead there. He's able to recruit the students at Sonoma State. And then there I, like, I'm another point wearing my nonprofit hat, and then we have our community partners, and they are the North Bay Organizing Project, and the Latinx Student Congress, and our partner there is Manny Morales, and we, with his hope, he recruits students from the Latinx Student Congress, And we have a running Latinx Youth Environmental Justice Council, so they get to come on campus, and Dr. Soto and I train the undergrads to, like, lead these workshops in environmental justice and community health. And it's really amazing. And again, like a lot of the students that we're recruiting, most are Latinx, if not most are first gen and then Dr Soto and I are both Latinx, and we're serving, I think it's 100% Latinx youth EJ council with a Latinx partner. And most of these kids come from a predominantly Latinx frontline EJ community. So it's just like, it's such a beautiful space. And Dr Sota, and I really spent a lot of time thinking about reimagining the academy as a public good, like, how do we make the university a space that actually serves the community? And I think speaking about HSI or Hispanic serving institutions, they are so primed to do that because of who we are, right? And there's a there's trust that's kind of baked in, and just our identity right, apart from, like, our ethics really driving building trust with our partners. And we've been using education as a tool for community deliberation so that we can support these youth as they fight for cleaner air and a more just environment. And so things that we've worked on, and so I think, like that piece of it is, like, more important, almost in like, the stuff that they get to do, because we put in all this work to build this partnership, and now we get to just follow their lead, the youth lead. It's beautiful. And so we've done things like, we've given them air monitors. They get to go out and like, monitor the air and like that data is theirs. And then we teach them the research methods of how to clean that data. So it truly is like a practice of data sovereignty. Like that data is theirs. It does not get pushed out to the cloud. It's on an SD card, and they get to decide what they do with it. And we have a couple other projects, like in the works, but it's been a really like healing practice in some of the environmental justice work I'm privileged to do.Brian Bienkowski Well, I bet some of the participants would agree, and the idea of reimagining the academy to be a public good is what you said. And like that is a pretty simple statement, but it's like pretty radical, if you think about the ways universities and institutions have operated for century, over a century. And it's a pretty radical concept, so good on you for for being part of that change. And does this how beautiful to have you speak about Sonoma State University as being pivotal at one point in your life, and now you are, you are one of those people that's that's providing a space for others. So just that full circle is really cool to hear about.Laura Diaz Yeah, it's been, it's been pretty special.Brian Bienkowski Yeah, for sure. And so you mentioned that you are a mother, so we have had, we actually had a podcast with a couple senior fellows where they discuss being researchers and mothers and how things change them, and it was just one of my favorite podcasts that we've done when I turned the microphone over to them, and I'm wondering just how it has it does has it done the same for you? Has it changed how you've thought about or conducted your research?Laura Diaz Yeah, so I came into grad school already being a mom, and so there are ways that it has impacted how I engage in research, for sure, and I think a really, a really, kind of important component of of the work that we do with at Sonoma State, with P4ER. We're also supporting undergraduate students who are also parents, and creating a space where the student parent feels like their whole self is welcome is incredibly important to some of the things that we do. And so there's like, I often bring my son to our workshops, because I know that if I do, then the students can also bring their kids. And so we're really trying to create an atmosphere where motherhood is welcomed, where it's embraced and it's also encouraged. And I think another like piece of being my son's mom that has really impacted me in research, which I feel like this is, again, I'm like, I love education, but that, I think, is a piece that we don't talk about enough in research, is the role that education or knowledge sharing plays in the process of knowledge production. And so if we do research well, but we don't do teaching well, we aren't pushing the edges of that new knowledge enough. And in research, we get to ask new questions, and we get to present that to new learners who have a different worldview than those of us who are asking those questions, so they can write like during the moment research is being done actually impact that research to be a more like to have a fuller angle to it. And so I just, I think about that a lot, because my son is in third grade and just seeing how he's learning and all that stuff. I think, I think a lot about the role of holistic learning and how that can play a big role in healthy development of of children and and research.Brian Bienkowski And I'm wondering if there are things that you tips you have, or things that you do to decompress, to cope, to make sure that you're doing okay.Laura Diaz I'm a dancer, so I'm a salcera, and I dance with a salsa Maria Dance Company in Oakland. Shout out to my dance family. That is a space where I have to shut my brain off, and it's like you were talking about, like music. I think I've been kind of able to get away with not playing piano for so long, because I've been really intensely dancing and so having, like, an artistic expression for my body has been really important. So like, I that that plays a big role in my own ability to kind of sustain we have work that's justice centered. And the cool thing about that too is that, like, they also really embrace like family. So like, my son will come and and, like, sit and watch practices, which he, like loves doing, which is super cool, because I remember being kid and going to my dad's soccer games and like that being a really like, it actually is, like, a big health promotion piece of my life, right, seeing my parents be active. Um, but anyways, so yeah, dance.Brian Bienkowski I think that's a good point too. Like having your children. See, I'm a big fan. I don't have kids. We are, we are child-free, but I have nieces and nephews, and I think it's so important for kids to see their parents as human beings. Like, yes, mom works hard and does research and but mom also dances like that. I don't know, to me, there's something cool about kids seeing their parents as whole human beings. So Laura, before we get to some of the fun questions and get you out of here, what are you optimistic about?Laura Diaz this summer, we came off of doing a summer institute for educators, and being able to be in community with educators who are these incredible like, they're the heart of a lot of of their community, like, of their school communities, and the impact that they have on on the kids that they get to teach, like, really does provide a lot of hope for me. And I think, like also being able to partner with youth and seeing just how they're such a raw reflection of society, how they're like, not fully yet assimilated into our social hierarchies. And when they see something that's wrong, like, they call it outright then and there, right? And they're like, dude, let's do something about it. And like, that is the energy that we need in this space, and it's such a privilege to work in partnership to their own EJ activism.Brian Bienkowski Awesome. Well, what a beautiful note to end on. So I have three rapid fire questions where you can just answer with one word or a phrase. My dream vacation isLaura Diaz Mexico City.Brian Bienkowski I feel most creative when I'mLaura Diaz Dancing salsaBrian Bienkowski if I could have dinner with one person, it would beLaura Diaz Leslie Jones.Brian Bienkowski Tell me about Leslie Jones?Laura Diaz Oh, she's someone I really look up to. She also has a brother who struggled and like seeing the way her autobiography. Is amazing, by the way, but just like the way that she's chosen to like, be strong and push through that and also be authentic and be raw and be herself, is something that I like. I hope that I bring in all the spaces that I have the privilege to navigate through.Brian Bienkowski Well, you've certainly brought it to the space today. And I don't know if it's if it's her autobiography or not, but what is the last book you read for fun?Laura Diaz I read In the Dream House, which is also an autobiography by Carmen Maria Machado. It's really beautiful. I read a lot. So I also read hood. Just finished reading Hood Feminism, which is an amazing book by Mickey Kendall, and it like talks about how feminism needs to prioritize the hood bipoc woman's experience. It's amazing.Brian Bienkowski But Laura, it has been so wonderful to have you on today. I'm so glad you're in this program and to be introduced to your work and your mind and the things that you're thinking about. So thank you so much.Laura Diaz Yeah, thank you so much.

Laura Diaz joins the Agents of Change in Environmental Justice podcast to discuss the intersection of social and environmental stressors on children’s health.Diaz, a current fellow and a Ph.D. student in Environmental Health Sciences at UC Berkeley, also talks about how her own childhood shaped her understanding of environmental injustice, and how being a mother has shaped her research – and her life.The Agents of Change in Environmental Justice podcast is a biweekly podcast featuring the stories and big ideas from past and present fellows, as well as others in the field. You can see all of the past episodes here.Listen below to our discussion with Diaz and subscribe to the podcast at iTunes or Spotify. Agents of Change in Environmental Justice · Laura Diaz on how social and environmental stress impact children’s healthTranscriptBrian BienkowskiLaura, how are you doing today?Laura Diaz I'm doing okay. How are youBrian Bienkowski I'm doing great. And where are you today?Laura Diaz I am in South San Francisco, which is close to the San Francisco International Airport.Brian Bienkowski Very cool. I love it out there. And you are from originally not far from there. So tell me a little bit about growing up in Northern California.Laura Diaz Yeah, so I grew up in the East San Francisco Bay Area, and specifically, it's like the geographic location where the watershed from the Sierra mountains meets the mouth of the San Francisco Bay, and it's beautiful. And just behind where the Bay is, there's these rolling golden hills. And because of the history that Pittsburgh has, which is my hometown, with the fossil fuel industry, and specifically during the Gold Rush, they were actually mining coal out there that laid the foundation for a polluting industry which persists today, and it's become one of the more affordable places in the San Francisco Bay area to live. And so I lived in between this corridor of polluting industry, right along that water, which included the Dow Chemical Plant, the power plant and several other toxic release facilities. And then on the other side of us was a highly trafficked freeway. And then we lived there until it was about four and then shortly after, we moved just over that same freeway, and the freeway was like legit our neighbors and the that whole corridor polluting industry was still an eye shot of where we lived. And those cities are largely known as commuter cities because they're so affordable. A lot of families move out there to raise their family, and that was true for my parents as well. So they commuted about an hour and a half, and so a lot of our childhood was spent largely unsupervised, and at some point, my parents decided to get us an inter-district transfer to the city where they worked. And so they worked in a city called wanna Creek, California, and that city is predominantly white and home to the uber rich. And I remember like, being at school and just feeling like I really didn't, like fit in. And it went beyond that, like kind of normal, like what I see with my son, where he's, like, trying to make friends and stuff. It went beyond that, like something just didn't fit. And I remember like, walking home from school, and I would have to walk through this outdoor plaza with stores like Neiman Marcus and Tiffany's and make my way to my dad's tailoring shop. And like, I remember opening the door, and I would get this like sense of relief, and I would feel like I could breathe again. And it was like home, and yet, I would see my dad on his hands and knees fixing the clothing of my classmates parents. And then every day we would take our trek back home. So we'd be going from this very affluent space, it was very green, a lot of open space back home, to this space where it's a lot of concrete, like again, we'd see, like, that whole polluting industry, and yet, like, I'd hop out of the car super excited, run to my neighbor's house and we'd be playing basketball for the rest of the evening. I have, like, so much love for where I grew up, and I feel like my work now is like. Of letter to my community, and I had this like daily reminder of the difference between wealth and poverty, between predominantly white communities and predominantly diverse communities.Brian Bienkowski Well, that's a really beautiful way to paint your hometown. I have to say, when I first looked it up, I was like, I did not know Laura was from Pittsburgh. When I met her, she seemed like she was from the West Coast, so I did not know that there was a Pittsburgh California. But thank you so much for painting that picture. And you, you know, you've mentioned this kind of industrial backdrop and maybe some social dynamics and racial dynamics at school that were uncomfortable. I'm wondering where along the way you became aware or interested in kind of the concept of environmental justice and injustice?Laura Diaz Yeah. So, I mean, like those, like, big smokes stacks, like, what we see in pictures a lot when we see, like, read articles about environmental justice, like, that was the backdrop to my childhood. And yet, I had no idea that that, that I grew up in an environmental justice community, right? So I am a former high school science and math teacher, and there was a summer where I did a professional development program in the topic of sustainability. It had it was there that I met Karna Wong, and she's a faculty at Sonoma State University, and she absolutely changed my life. She gave a workshop on environmental justice, and she taught us about the principles of environmental justice, various frameworks of EJ and her and I, like, hit it off like it was, it was great. This is why I love, like, professional development programs, which we can talk about later. But she also showed me this database called CalEnviroScreen, and that is, it's basically a map of California, and it displays community exposures to pollution, health burdens and demographic characteristics. And that was the first time that I saw my community in bright red, because bright red means more burdens. And then I saw Walnut Creek bright green, and bright green is associated with less burdens, or under-burden. And it just was like this final puzzle piece of like, like, whoa, everything came together. And I like, understood that that feeling of like something wasn't right made so much sense by looking at that map, and I realized that environmental justice wasn't only something I like, loved learning about, it also impacted my life. I don't know, and I'm never going to know, if growing up in close proximity to these facilities is a reason why I have two chronic autoimmune diseases, but it does drive my work. And I think also, in addition to that, there was another educator fellowship that I was on, and I did that with Earthwatch. We were out at catalea Island, and we were studying Harmful Algal Blooms. And while we were out there, my mom called me, and she was like, I made it out, but paradise is on fire. And that was in 2018 and although she made it out alive, 85 folks did not, and that was the campfire. And over 13,000 homes were lost in one of those of my mom's and it's like, it's hard to talk about this, but it's like, because it's so deeply personal, right? But I remember flying home from that experience and waiting outside of the airport and it was raining ash, and those ashes included my mom's home. So it's just the impacts of climate justice, and environmental justice has hit me, personally, very hard, and I think more recently, I've been really thinking about the connection between wildfires in California, the fossil fuel industry and our inability to transition away fast enough, and how my community is going to continue to pay the price until we do so. And that really drives the work that I do. And like you can hear my voice shaking, but it's like I have so much passion to you, and it's so important. There's, there's an urgency to this work that's needed that I'm I'm not quite sensing enough in the academic spheres that I'm in now, but I hope to be a part of that driving force.Brian Bienkowski And I've been asking everybody this question before we get into some of your your research and your education, what is a moment or event that has helped shape your identity?Laura Diaz Yeah, okay, I think there's a couple I feel like we're getting into, like, the intense stuff in the beginning. So like, Sorry my voice is shaking, but also self-deprecating humor is how I get. So, I think the first thing that really, really impacted like who I am and how I moved through this world, was when I was in ninth grade, my dad and I had to go to the county courthouse, and it was the first time that I saw my brother handcuffed. And we were there to see him and be there for him while he was going to be sentenced for his first felony. And I remember the judge asked his family to stand up those, those of us who were there in support. And I was bawling as my I was seeing my hero like out there behind a glass wall in handcuffs, and I was like, barely could stand up, and I was just tears were just rolling down my face, and, like, for the longest time, I thought it was actually my fault that he got sentenced, because I couldn't keep it together, right? It was just I was I must have been around 13, right? a kid. And I think during my adolescence, I really developed this, like, strong understanding of the impact of oppression on the lives of children, and it really is the root of how I move through the work that I do. And I think also kind of on a more tender side, a moment that really has shaped who I am, is being my son's mom, and the day I became his mom was the most beautiful day of my life. And I tell him often how lucky I am to be his mom, and I like to say that my most proudest title is being soccer mom. And I do know too that like the most important thing I can do, personally and professionally is invest in my son and my family.Brian Bienkowski Awesome. Well, thank you so much for both of those very we will get you away from these, all of these that are pulling at your emotions. Maybe we'll circle back and we'll get emotional again, but thank you so much for opening up about that. I'm sure there are others who can relate. And when you talk about tears streaming down, I was hoping my my blue light glasses were hiding we're hiding mine on that so, so let's change gears a little bit. And you went to so you mentioned Sonoma State University, which is now recognized as a Hispanic serving institution, and you went there for your undergraduate degree. So we've had folks on talking about going to historically Black colleges and kind of the impact that had on them and a level of comfort and that it brought them. So I was wondering if you could talk about that experience and how going to a Hispanic Serving Institution benefited you?Laura Diaz Yeah, I, I remember the first week being on campus and like, being overwhelmed with this, like, sense of hope. And I think, and it was great, like I felt like, you're saying, I just felt like safe, that that uncomfortable, like unwelcoming feeling that I felt when I was going to schools in Walnut Creek was like gone. And I knew that I was believed in and supported by by the faculty. The commitment to teaching excellence at HSIs is so high, and that's really impacted my teaching philosophy now, and I understand firsthand what it means like to create a vulnerable learning environment and what it means to like not be in one, right? And because I was able to really thrive in this space, I majored in Molecular Cell bio. I double minored in Chem and in music. I was part of the chamber music orchestra, like I was, like, loving life. It was great. And also, my junior year, it started getting sick, and I was having to walk to school with a cane, and I ended up getting diagnosed with lupus, and during that diagnosis period that was really difficult. And despite that, I knew that the faculty were there for me. I knew my classmates were there for me, and they really helped me push through a really, really difficult time for me. And so I just, I feel very committed to what education means, what that means for social mobility, and that's stayed with me. And continue, I continue to work and partner with Sonoma State, which is, yeah, really great.Brian Bienkowski Yeah, what a great opportunity. Do you still play music?Laura Diaz I don't, but I need to. I played the piano. Oh,Brian Bienkowski no, no, that's that was my next question. That's very cool. Yeah, I am a musician. I play a whole variety of instruments. And I've said on the podcast before that it just it feels like it is that other side of the brain. It just feels so good to take some time to stretch the create creative legs every now and then, after staring at a computer for so long. So I'm always curious.Laura Diaz Yeah, I hear that, and hopefully this inspires me to, like, get it together,Brian Bienkowski get back to it. Yeah. Well, I'm sure you have as we're gonna get into it sounds like we have plenty going on, but I hope you find some time. So now you are studying air pollution, specifically particulate matter burdes in marginalized communities. So particulate matter is linked to negative health outcomes, and one of them that you focus on is mitochondrial dysfunction. So can you explain first, what mitochondria are and how air pollution may affect them?Laura Diaz So mitochondria are these fascinating little organelles that I've been spending several years thinking about. They're the site of chemical energy production of our cells, so they make the energy that our cells need in order to actually function properly. And they're really unique. So they have their own DNA or their own genome, and in that, within that, it codes for 13 proteins which are vital for the mitochondria to be functioning properly. And what's interesting about that is that they they lack these protective mechanisms that, like our nuclear DNA has, and so it makes them particularly vulnerable to situations where our cells are undergoing stress, and we see that mitochondrial function declines with aging and also with disease. And what I spend a lot of time thinking about is what mitochondrial function or dysfunction looks like in epithelial cells. And those are the cell types that we find in the lining of our mouth. They're in our lungs, and there's like outer barrier of our skin, so they come in contact with this, like wild outer world, and play this really important protective mechanism, and they they play a big role in detoxification. And so what happens when they're exposed to particulate matter? There's actually an increase in free radicals in our in the cell, and those are called reactive oxygen species, and those, if there's too many and there's an imbalance, those can cause mitochondrial dysfunction, and that's what I'm spending a lot of time thinking about.Brian Bienkowski So if these mitochondria are disrupted in some way by and I should say particulate matter is fine particulate pollution. This can come from anything from wildfires to traffic to to heavy industry, fossil fuel burning, if the mitochondria are disrupted, what kind of impact may that have on, let's say, developing children?Laura Diaz Yeah, so I, my research focuses on child health, and again, I'm really thinking about these epithelial cells and what's happening in relation to the exposure of, like, what you're saying with particulate matter and and when we see that mitochondrial dysfunction, it actually triggers a cascade of events to happen in the cell. So the cell tries to fix these problems when they come up, but when it's constantly having to fix these problems, that's when, that's when, like, long-term issues can can arise. And so what we see is that the this outer lining of cells can be really impacted by mitochondrial dysfunction, because they they get put in this like pro-inflammatory state, and so then they become really vulnerable to things like allergens. So what I'm studying, then, is, is that mitochondrial dysfunction playing a role in the development of diseases like eczema or rhinitis or asthma among children in frontline environmental justice communities.Brian Bienkowski So as part of this, you're also looking at adverse childhood experience known as ACES, which was a new acronym for me after I met you at the retreat. That was something I didn't know about. So in addition to the air pollution and mitochondrial dysfunction, you're looking at aces. So can you explain aces and why you feel it's an important part of including in this research,Laura Diaz ACES stands for Adverse Childhood eEperiences. In California, there's a lot of work being done on the public health end of things, and it's getting labeled as toxic stress. What it is is it's a survey with 10 questions that assesses a child's exposure to abuse, neglect and household challenges. And back in the 90s, there was a groundbreaking study that was done, and they found that exposure to ACES was associated with increased risk of death from seven out of 10 of the leading causes of death and so and there's been a lot more work done now, but I really want to invite us all in, like environmental health work and environmental justice, to be thinking about day to day stress, and that exposure to stress as an environmental exposure, just like we would think about particulate matter. And in order to understand the impact of oppression and the health impacts living in frontline communities, I think it's really important that we also include exposure to stress. And what I've found in my research is that exposure to ACES is associated with an increase in mitochondrial dysfunction and so, and I'm seeing that among a cohort of children, right? So it like the changes that becomes embodied in our cells happens pretty quickly. It can at least.Brian Bienkowski So you're seeing that not only. So if there are these environmental insults, and then you pile on kind of just day to day stress in a child's life, whether that's from inside or outside of the home, the combination of those, they're both doing bad things at the cellular level, to the kid or to a child, and setting them up for potential increased illness.Laura Diaz Yeah, and I think, like, I'm really thinking about the mitochondria a lot, obviously, but if we think about being in a state of stress, where we're in this, like fight or flight, like our physiological response, our cells have an increased need of energy, and when that happens over and over and over again, then the mitochondria is being overworked. And so understanding what's happening at the cellular level is also really important.Brian Bienkowski v really fascinating research. And I love the idea of thinking more about stress, and of course, with your research with kids, but even for adults. I mean, I think stress is such a kind of a silent killer. I mean, it just, it's so bad for our body, and yet, a lot of us kind of live with it, and it's part of our, part of our life, so it's really important to to remember that. So I'm wondering, what are some of the next steps in this research? What would you like to do? What are you going to do? What are you working on?Laura Diaz Yeah, I think, like, I mean, I hope I can spend more time studying the mitochondria. I think, as is true for like, most folks in graduate school, really figuring out, like, where is my niche? Like, where is my lane? Like, I do hope that I get to spend quite a bit more time really deep diving into the mitochondria. Specifically, I'm really curious about what is happening and what other biomarkers are associated with this mitochondrial dysfunction, and also like mitochondrial mutations, which are pretty interesting to think about as well. So I'm kind of following, like what's happening in a molecular mechanism level.Brian Bienkowski Do you like doing research?Laura Diaz Yeah, I love it. Oh, I love it. Even, like and, and when I shouldn't say even, and when I was teaching, like, research was a big part of of my teaching practice with high schoolers. I have, I think this is like something that has been passed on from, from my family, for sure, but in my is just this love for learning and not being afraid of of kind of the unknown. Yeah.Brian Bienkowski So you mentioned earlier this kind of idea of being really interested in kind of professional development, and I know outside of your research, you're also, you're doing some other things, and you've you founded a nonprofit, the Educator Collective for Environmental Justice. So I was wondering if you could just tell us about that organization and why you started it?Laura Diaz Yeah, so when I met Karna Wong who, like, blew my mind about environmental justice and and really started supporting me on my journey through, like, integrating environmental justice in the classroom, I literally started writing curriculum for my class that evening, and I knew that there was a gap in environmental justice curriculum and training for educators at that time, and I was chosen to be a Science Friday educator collaborator, where I was able to actually publish my EJ curriculum, which was really cool. And I started getting invited to give conferences or talks at conferences, and I gave a talk at a climate solutions conference, and that's where I met Samra Pathania, who's also a high school teacher, and he is just as passionate about decarbonization and climate solutions. And so we spent that whole conference just like talking together and visioning together, like how we could create a space for professional development and like, almost like a grassroots movement building for educators around these topics of environmental justice and climate solutions. Because, just like, I have that really, like urgent sense to, like do something now, he's similar with decarbonization. And so originally, we started as a home for Educator professional development for again, EJ and climate solutions. And we actually grew really quickly, which was really cool and supported, started supporting youth. So we had a youth collective, which now we have two Youth Environmental Justice councils that we support. We have a cohort of educators that that we support in EJ and climate solutions and decarbonization. And then we also partner with communities. So we've given workshops to communities like building DIY indoor air filters and giving them like educational workshops around environmental justice. We partnered with promotoras and doing, like, some air pollution monitoring. So it's been this, like, really beautiful little space that that is is growing and thriving.Brian Bienkowski Excellent. And speaking of being too busy to play piano, you also co-founded the Partners for Equity and Research, which supports undergraduates doing community engaged research. So can you also talk about this, maybe a project or two that you've worked on there, and how you work to center community voices and experiences in that initiative?Laura Diaz Yeah, so maybe I could describe a little bit of like, our structure. It's a little bit like, yeah, has some moving pieces, but we are an environmental justice hub that's housed at Sonoma State University, and I co-lead that with Professor Daniel Soto, who's a department chair of Geography, Environment and Planning, and we train undergraduate researchers in community-driven research methods. So I like to think of it as a triangle, the way our partnership works. So we have the university and Dr. Soto's really important. Like, kind of the lead there. He's able to recruit the students at Sonoma State. And then there I, like, I'm another point wearing my nonprofit hat, and then we have our community partners, and they are the North Bay Organizing Project, and the Latinx Student Congress, and our partner there is Manny Morales, and we, with his hope, he recruits students from the Latinx Student Congress, And we have a running Latinx Youth Environmental Justice Council, so they get to come on campus, and Dr. Soto and I train the undergrads to, like, lead these workshops in environmental justice and community health. And it's really amazing. And again, like a lot of the students that we're recruiting, most are Latinx, if not most are first gen and then Dr Soto and I are both Latinx, and we're serving, I think it's 100% Latinx youth EJ council with a Latinx partner. And most of these kids come from a predominantly Latinx frontline EJ community. So it's just like, it's such a beautiful space. And Dr Sota, and I really spent a lot of time thinking about reimagining the academy as a public good, like, how do we make the university a space that actually serves the community? And I think speaking about HSI or Hispanic serving institutions, they are so primed to do that because of who we are, right? And there's a there's trust that's kind of baked in, and just our identity right, apart from, like, our ethics really driving building trust with our partners. And we've been using education as a tool for community deliberation so that we can support these youth as they fight for cleaner air and a more just environment. And so things that we've worked on, and so I think, like that piece of it is, like, more important, almost in like, the stuff that they get to do, because we put in all this work to build this partnership, and now we get to just follow their lead, the youth lead. It's beautiful. And so we've done things like, we've given them air monitors. They get to go out and like, monitor the air and like that data is theirs. And then we teach them the research methods of how to clean that data. So it truly is like a practice of data sovereignty. Like that data is theirs. It does not get pushed out to the cloud. It's on an SD card, and they get to decide what they do with it. And we have a couple other projects, like in the works, but it's been a really like healing practice in some of the environmental justice work I'm privileged to do.Brian Bienkowski Well, I bet some of the participants would agree, and the idea of reimagining the academy to be a public good is what you said. And like that is a pretty simple statement, but it's like pretty radical, if you think about the ways universities and institutions have operated for century, over a century. And it's a pretty radical concept, so good on you for for being part of that change. And does this how beautiful to have you speak about Sonoma State University as being pivotal at one point in your life, and now you are, you are one of those people that's that's providing a space for others. So just that full circle is really cool to hear about.Laura Diaz Yeah, it's been, it's been pretty special.Brian Bienkowski Yeah, for sure. And so you mentioned that you are a mother, so we have had, we actually had a podcast with a couple senior fellows where they discuss being researchers and mothers and how things change them, and it was just one of my favorite podcasts that we've done when I turned the microphone over to them, and I'm wondering just how it has it does has it done the same for you? Has it changed how you've thought about or conducted your research?Laura Diaz Yeah, so I came into grad school already being a mom, and so there are ways that it has impacted how I engage in research, for sure, and I think a really, a really, kind of important component of of the work that we do with at Sonoma State, with P4ER. We're also supporting undergraduate students who are also parents, and creating a space where the student parent feels like their whole self is welcome is incredibly important to some of the things that we do. And so there's like, I often bring my son to our workshops, because I know that if I do, then the students can also bring their kids. And so we're really trying to create an atmosphere where motherhood is welcomed, where it's embraced and it's also encouraged. And I think another like piece of being my son's mom that has really impacted me in research, which I feel like this is, again, I'm like, I love education, but that, I think, is a piece that we don't talk about enough in research, is the role that education or knowledge sharing plays in the process of knowledge production. And so if we do research well, but we don't do teaching well, we aren't pushing the edges of that new knowledge enough. And in research, we get to ask new questions, and we get to present that to new learners who have a different worldview than those of us who are asking those questions, so they can write like during the moment research is being done actually impact that research to be a more like to have a fuller angle to it. And so I just, I think about that a lot, because my son is in third grade and just seeing how he's learning and all that stuff. I think, I think a lot about the role of holistic learning and how that can play a big role in healthy development of of children and and research.Brian Bienkowski And I'm wondering if there are things that you tips you have, or things that you do to decompress, to cope, to make sure that you're doing okay.Laura Diaz I'm a dancer, so I'm a salcera, and I dance with a salsa Maria Dance Company in Oakland. Shout out to my dance family. That is a space where I have to shut my brain off, and it's like you were talking about, like music. I think I've been kind of able to get away with not playing piano for so long, because I've been really intensely dancing and so having, like, an artistic expression for my body has been really important. So like, I that that plays a big role in my own ability to kind of sustain we have work that's justice centered. And the cool thing about that too is that, like, they also really embrace like family. So like, my son will come and and, like, sit and watch practices, which he, like loves doing, which is super cool, because I remember being kid and going to my dad's soccer games and like that being a really like, it actually is, like, a big health promotion piece of my life, right, seeing my parents be active. Um, but anyways, so yeah, dance.Brian Bienkowski I think that's a good point too. Like having your children. See, I'm a big fan. I don't have kids. We are, we are child-free, but I have nieces and nephews, and I think it's so important for kids to see their parents as human beings. Like, yes, mom works hard and does research and but mom also dances like that. I don't know, to me, there's something cool about kids seeing their parents as whole human beings. So Laura, before we get to some of the fun questions and get you out of here, what are you optimistic about?Laura Diaz this summer, we came off of doing a summer institute for educators, and being able to be in community with educators who are these incredible like, they're the heart of a lot of of their community, like, of their school communities, and the impact that they have on on the kids that they get to teach, like, really does provide a lot of hope for me. And I think, like also being able to partner with youth and seeing just how they're such a raw reflection of society, how they're like, not fully yet assimilated into our social hierarchies. And when they see something that's wrong, like, they call it outright then and there, right? And they're like, dude, let's do something about it. And like, that is the energy that we need in this space, and it's such a privilege to work in partnership to their own EJ activism.Brian Bienkowski Awesome. Well, what a beautiful note to end on. So I have three rapid fire questions where you can just answer with one word or a phrase. My dream vacation isLaura Diaz Mexico City.Brian Bienkowski I feel most creative when I'mLaura Diaz Dancing salsaBrian Bienkowski if I could have dinner with one person, it would beLaura Diaz Leslie Jones.Brian Bienkowski Tell me about Leslie Jones?Laura Diaz Oh, she's someone I really look up to. She also has a brother who struggled and like seeing the way her autobiography. Is amazing, by the way, but just like the way that she's chosen to like, be strong and push through that and also be authentic and be raw and be herself, is something that I like. I hope that I bring in all the spaces that I have the privilege to navigate through.Brian Bienkowski Well, you've certainly brought it to the space today. And I don't know if it's if it's her autobiography or not, but what is the last book you read for fun?Laura Diaz I read In the Dream House, which is also an autobiography by Carmen Maria Machado. It's really beautiful. I read a lot. So I also read hood. Just finished reading Hood Feminism, which is an amazing book by Mickey Kendall, and it like talks about how feminism needs to prioritize the hood bipoc woman's experience. It's amazing.Brian Bienkowski But Laura, it has been so wonderful to have you on today. I'm so glad you're in this program and to be introduced to your work and your mind and the things that you're thinking about. So thank you so much.Laura Diaz Yeah, thank you so much.



Laura Diaz joins the Agents of Change in Environmental Justice podcast to discuss the intersection of social and environmental stressors on children’s health.


Diaz, a current fellow and a Ph.D. student in Environmental Health Sciences at UC Berkeley, also talks about how her own childhood shaped her understanding of environmental injustice, and how being a mother has shaped her research – and her life.

The Agents of Change in Environmental Justice podcast is a biweekly podcast featuring the stories and big ideas from past and present fellows, as well as others in the field. You can see all of the past episodes here.

Listen below to our discussion with Diaz and subscribe to the podcast at iTunes or Spotify.


Agents of Change in Environmental Justice · Laura Diaz on how social and environmental stress impact children’s health

Transcript


Brian Bienkowski

Laura, how are you doing today?

Laura Diaz

I'm doing okay. How are you

Brian Bienkowski

I'm doing great. And where are you today?

Laura Diaz

I am in South San Francisco, which is close to the San Francisco International Airport.

Brian Bienkowski

Very cool. I love it out there. And you are from originally not far from there. So tell me a little bit about growing up in Northern California.

Laura Diaz

Yeah, so I grew up in the East San Francisco Bay Area, and specifically, it's like the geographic location where the watershed from the Sierra mountains meets the mouth of the San Francisco Bay, and it's beautiful. And just behind where the Bay is, there's these rolling golden hills. And because of the history that Pittsburgh has, which is my hometown, with the fossil fuel industry, and specifically during the Gold Rush, they were actually mining coal out there that laid the foundation for a polluting industry which persists today, and it's become one of the more affordable places in the San Francisco Bay area to live. And so I lived in between this corridor of polluting industry, right along that water, which included the Dow Chemical Plant, the power plant and several other toxic release facilities. And then on the other side of us was a highly trafficked freeway. And then we lived there until it was about four and then shortly after, we moved just over that same freeway, and the freeway was like legit our neighbors and the that whole corridor polluting industry was still an eye shot of where we lived. And those cities are largely known as commuter cities because they're so affordable. A lot of families move out there to raise their family, and that was true for my parents as well. So they commuted about an hour and a half, and so a lot of our childhood was spent largely unsupervised, and at some point, my parents decided to get us an inter-district transfer to the city where they worked. And so they worked in a city called wanna Creek, California, and that city is predominantly white and home to the uber rich. And I remember like, being at school and just feeling like I really didn't, like fit in. And it went beyond that, like kind of normal, like what I see with my son, where he's, like, trying to make friends and stuff. It went beyond that, like something just didn't fit. And I remember like, walking home from school, and I would have to walk through this outdoor plaza with stores like Neiman Marcus and Tiffany's and make my way to my dad's tailoring shop. And like, I remember opening the door, and I would get this like sense of relief, and I would feel like I could breathe again. And it was like home, and yet, I would see my dad on his hands and knees fixing the clothing of my classmates parents. And then every day we would take our trek back home. So we'd be going from this very affluent space, it was very green, a lot of open space back home, to this space where it's a lot of concrete, like again, we'd see, like, that whole polluting industry, and yet, like, I'd hop out of the car super excited, run to my neighbor's house and we'd be playing basketball for the rest of the evening. I have, like, so much love for where I grew up, and I feel like my work now is like. Of letter to my community, and I had this like daily reminder of the difference between wealth and poverty, between predominantly white communities and predominantly diverse communities.

Brian Bienkowski

Well, that's a really beautiful way to paint your hometown. I have to say, when I first looked it up, I was like, I did not know Laura was from Pittsburgh. When I met her, she seemed like she was from the West Coast, so I did not know that there was a Pittsburgh California. But thank you so much for painting that picture. And you, you know, you've mentioned this kind of industrial backdrop and maybe some social dynamics and racial dynamics at school that were uncomfortable. I'm wondering where along the way you became aware or interested in kind of the concept of environmental justice and injustice?

Laura Diaz

Yeah. So, I mean, like those, like, big smokes stacks, like, what we see in pictures a lot when we see, like, read articles about environmental justice, like, that was the backdrop to my childhood. And yet, I had no idea that that, that I grew up in an environmental justice community, right? So I am a former high school science and math teacher, and there was a summer where I did a professional development program in the topic of sustainability. It had it was there that I met Karna Wong, and she's a faculty at Sonoma State University, and she absolutely changed my life. She gave a workshop on environmental justice, and she taught us about the principles of environmental justice, various frameworks of EJ and her and I, like, hit it off like it was, it was great. This is why I love, like, professional development programs, which we can talk about later. But she also showed me this database called CalEnviroScreen, and that is, it's basically a map of California, and it displays community exposures to pollution, health burdens and demographic characteristics. And that was the first time that I saw my community in bright red, because bright red means more burdens. And then I saw Walnut Creek bright green, and bright green is associated with less burdens, or under-burden. And it just was like this final puzzle piece of like, like, whoa, everything came together. And I like, understood that that feeling of like something wasn't right made so much sense by looking at that map, and I realized that environmental justice wasn't only something I like, loved learning about, it also impacted my life. I don't know, and I'm never going to know, if growing up in close proximity to these facilities is a reason why I have two chronic autoimmune diseases, but it does drive my work. And I think also, in addition to that, there was another educator fellowship that I was on, and I did that with Earthwatch. We were out at catalea Island, and we were studying Harmful Algal Blooms. And while we were out there, my mom called me, and she was like, I made it out, but paradise is on fire. And that was in 2018 and although she made it out alive, 85 folks did not, and that was the campfire. And over 13,000 homes were lost in one of those of my mom's and it's like, it's hard to talk about this, but it's like, because it's so deeply personal, right? But I remember flying home from that experience and waiting outside of the airport and it was raining ash, and those ashes included my mom's home. So it's just the impacts of climate justice, and environmental justice has hit me, personally, very hard, and I think more recently, I've been really thinking about the connection between wildfires in California, the fossil fuel industry and our inability to transition away fast enough, and how my community is going to continue to pay the price until we do so. And that really drives the work that I do. And like you can hear my voice shaking, but it's like I have so much passion to you, and it's so important. There's, there's an urgency to this work that's needed that I'm I'm not quite sensing enough in the academic spheres that I'm in now, but I hope to be a part of that driving force.

Brian Bienkowski

And I've been asking everybody this question before we get into some of your your research and your education, what is a moment or event that has helped shape your identity?

Laura Diaz

Yeah, okay, I think there's a couple I feel like we're getting into, like, the intense stuff in the beginning. So like, Sorry my voice is shaking, but also self-deprecating humor is how I get. So, I think the first thing that really, really impacted like who I am and how I moved through this world, was when I was in ninth grade, my dad and I had to go to the county courthouse, and it was the first time that I saw my brother handcuffed. And we were there to see him and be there for him while he was going to be sentenced for his first felony. And I remember the judge asked his family to stand up those, those of us who were there in support. And I was bawling as my I was seeing my hero like out there behind a glass wall in handcuffs, and I was like, barely could stand up, and I was just tears were just rolling down my face, and, like, for the longest time, I thought it was actually my fault that he got sentenced, because I couldn't keep it together, right? It was just I was I must have been around 13, right? a kid. And I think during my adolescence, I really developed this, like, strong understanding of the impact of oppression on the lives of children, and it really is the root of how I move through the work that I do. And I think also kind of on a more tender side, a moment that really has shaped who I am, is being my son's mom, and the day I became his mom was the most beautiful day of my life. And I tell him often how lucky I am to be his mom, and I like to say that my most proudest title is being soccer mom. And I do know too that like the most important thing I can do, personally and professionally is invest in my son and my family.

Brian Bienkowski

Awesome. Well, thank you so much for both of those very we will get you away from these, all of these that are pulling at your emotions. Maybe we'll circle back and we'll get emotional again, but thank you so much for opening up about that. I'm sure there are others who can relate. And when you talk about tears streaming down, I was hoping my my blue light glasses were hiding we're hiding mine on that so, so let's change gears a little bit. And you went to so you mentioned Sonoma State University, which is now recognized as a Hispanic serving institution, and you went there for your undergraduate degree. So we've had folks on talking about going to historically Black colleges and kind of the impact that had on them and a level of comfort and that it brought them. So I was wondering if you could talk about that experience and how going to a Hispanic Serving Institution benefited you?

Laura Diaz

Yeah, I, I remember the first week being on campus and like, being overwhelmed with this, like, sense of hope. And I think, and it was great, like I felt like, you're saying, I just felt like safe, that that uncomfortable, like unwelcoming feeling that I felt when I was going to schools in Walnut Creek was like gone. And I knew that I was believed in and supported by by the faculty. The commitment to teaching excellence at HSIs is so high, and that's really impacted my teaching philosophy now, and I understand firsthand what it means like to create a vulnerable learning environment and what it means to like not be in one, right? And because I was able to really thrive in this space, I majored in Molecular Cell bio. I double minored in Chem and in music. I was part of the chamber music orchestra, like I was, like, loving life. It was great. And also, my junior year, it started getting sick, and I was having to walk to school with a cane, and I ended up getting diagnosed with lupus, and during that diagnosis period that was really difficult. And despite that, I knew that the faculty were there for me. I knew my classmates were there for me, and they really helped me push through a really, really difficult time for me. And so I just, I feel very committed to what education means, what that means for social mobility, and that's stayed with me. And continue, I continue to work and partner with Sonoma State, which is, yeah, really great.

Brian Bienkowski

Yeah, what a great opportunity. Do you still play music?

Laura Diaz

I don't, but I need to. I played the piano. Oh,

Brian Bienkowski

no, no, that's that was my next question. That's very cool. Yeah, I am a musician. I play a whole variety of instruments. And I've said on the podcast before that it just it feels like it is that other side of the brain. It just feels so good to take some time to stretch the create creative legs every now and then, after staring at a computer for so long. So I'm always curious.

Laura Diaz

Yeah, I hear that, and hopefully this inspires me to, like, get it together,

Brian Bienkowski

get back to it. Yeah. Well, I'm sure you have as we're gonna get into it sounds like we have plenty going on, but I hope you find some time. So now you are studying air pollution, specifically particulate matter burdes in marginalized communities. So particulate matter is linked to negative health outcomes, and one of them that you focus on is mitochondrial dysfunction. So can you explain first, what mitochondria are and how air pollution may affect them?

Laura Diaz

So mitochondria are these fascinating little organelles that I've been spending several years thinking about. They're the site of chemical energy production of our cells, so they make the energy that our cells need in order to actually function properly. And they're really unique. So they have their own DNA or their own genome, and in that, within that, it codes for 13 proteins which are vital for the mitochondria to be functioning properly. And what's interesting about that is that they they lack these protective mechanisms that, like our nuclear DNA has, and so it makes them particularly vulnerable to situations where our cells are undergoing stress, and we see that mitochondrial function declines with aging and also with disease. And what I spend a lot of time thinking about is what mitochondrial function or dysfunction looks like in epithelial cells. And those are the cell types that we find in the lining of our mouth. They're in our lungs, and there's like outer barrier of our skin, so they come in contact with this, like wild outer world, and play this really important protective mechanism, and they they play a big role in detoxification. And so what happens when they're exposed to particulate matter? There's actually an increase in free radicals in our in the cell, and those are called reactive oxygen species, and those, if there's too many and there's an imbalance, those can cause mitochondrial dysfunction, and that's what I'm spending a lot of time thinking about.

Brian Bienkowski

So if these mitochondria are disrupted in some way by and I should say particulate matter is fine particulate pollution. This can come from anything from wildfires to traffic to to heavy industry, fossil fuel burning, if the mitochondria are disrupted, what kind of impact may that have on, let's say, developing children?

Laura Diaz

Yeah, so I, my research focuses on child health, and again, I'm really thinking about these epithelial cells and what's happening in relation to the exposure of, like, what you're saying with particulate matter and and when we see that mitochondrial dysfunction, it actually triggers a cascade of events to happen in the cell. So the cell tries to fix these problems when they come up, but when it's constantly having to fix these problems, that's when, that's when, like, long-term issues can can arise. And so what we see is that the this outer lining of cells can be really impacted by mitochondrial dysfunction, because they they get put in this like pro-inflammatory state, and so then they become really vulnerable to things like allergens. So what I'm studying, then, is, is that mitochondrial dysfunction playing a role in the development of diseases like eczema or rhinitis or asthma among children in frontline environmental justice communities.

Brian Bienkowski

So as part of this, you're also looking at adverse childhood experience known as ACES, which was a new acronym for me after I met you at the retreat. That was something I didn't know about. So in addition to the air pollution and mitochondrial dysfunction, you're looking at aces. So can you explain aces and why you feel it's an important part of including in this research,

Laura Diaz

ACES stands for Adverse Childhood eEperiences. In California, there's a lot of work being done on the public health end of things, and it's getting labeled as toxic stress. What it is is it's a survey with 10 questions that assesses a child's exposure to abuse, neglect and household challenges. And back in the 90s, there was a groundbreaking study that was done, and they found that exposure to ACES was associated with increased risk of death from seven out of 10 of the leading causes of death and so and there's been a lot more work done now, but I really want to invite us all in, like environmental health work and environmental justice, to be thinking about day to day stress, and that exposure to stress as an environmental exposure, just like we would think about particulate matter. And in order to understand the impact of oppression and the health impacts living in frontline communities, I think it's really important that we also include exposure to stress. And what I've found in my research is that exposure to ACES is associated with an increase in mitochondrial dysfunction and so, and I'm seeing that among a cohort of children, right? So it like the changes that becomes embodied in our cells happens pretty quickly. It can at least.

Brian Bienkowski

So you're seeing that not only. So if there are these environmental insults, and then you pile on kind of just day to day stress in a child's life, whether that's from inside or outside of the home, the combination of those, they're both doing bad things at the cellular level, to the kid or to a child, and setting them up for potential increased illness.

Laura Diaz

Yeah, and I think, like, I'm really thinking about the mitochondria a lot, obviously, but if we think about being in a state of stress, where we're in this, like fight or flight, like our physiological response, our cells have an increased need of energy, and when that happens over and over and over again, then the mitochondria is being overworked. And so understanding what's happening at the cellular level is also really important.

Brian Bienkowski

v really fascinating research. And I love the idea of thinking more about stress, and of course, with your research with kids, but even for adults. I mean, I think stress is such a kind of a silent killer. I mean, it just, it's so bad for our body, and yet, a lot of us kind of live with it, and it's part of our, part of our life, so it's really important to to remember that. So I'm wondering, what are some of the next steps in this research? What would you like to do? What are you going to do? What are you working on?

Laura Diaz

Yeah, I think, like, I mean, I hope I can spend more time studying the mitochondria. I think, as is true for like, most folks in graduate school, really figuring out, like, where is my niche? Like, where is my lane? Like, I do hope that I get to spend quite a bit more time really deep diving into the mitochondria. Specifically, I'm really curious about what is happening and what other biomarkers are associated with this mitochondrial dysfunction, and also like mitochondrial mutations, which are pretty interesting to think about as well. So I'm kind of following, like what's happening in a molecular mechanism level.

Brian Bienkowski

Do you like doing research?

Laura Diaz

Yeah, I love it. Oh, I love it. Even, like and, and when I shouldn't say even, and when I was teaching, like, research was a big part of of my teaching practice with high schoolers. I have, I think this is like something that has been passed on from, from my family, for sure, but in my is just this love for learning and not being afraid of of kind of the unknown. Yeah.

Brian Bienkowski

So you mentioned earlier this kind of idea of being really interested in kind of professional development, and I know outside of your research, you're also, you're doing some other things, and you've you founded a nonprofit, the Educator Collective for Environmental Justice. So I was wondering if you could just tell us about that organization and why you started it?

Laura Diaz

Yeah, so when I met Karna Wong who, like, blew my mind about environmental justice and and really started supporting me on my journey through, like, integrating environmental justice in the classroom, I literally started writing curriculum for my class that evening, and I knew that there was a gap in environmental justice curriculum and training for educators at that time, and I was chosen to be a Science Friday educator collaborator, where I was able to actually publish my EJ curriculum, which was really cool. And I started getting invited to give conferences or talks at conferences, and I gave a talk at a climate solutions conference, and that's where I met Samra Pathania, who's also a high school teacher, and he is just as passionate about decarbonization and climate solutions. And so we spent that whole conference just like talking together and visioning together, like how we could create a space for professional development and like, almost like a grassroots movement building for educators around these topics of environmental justice and climate solutions. Because, just like, I have that really, like urgent sense to, like do something now, he's similar with decarbonization. And so originally, we started as a home for Educator professional development for again, EJ and climate solutions. And we actually grew really quickly, which was really cool and supported, started supporting youth. So we had a youth collective, which now we have two Youth Environmental Justice councils that we support. We have a cohort of educators that that we support in EJ and climate solutions and decarbonization. And then we also partner with communities. So we've given workshops to communities like building DIY indoor air filters and giving them like educational workshops around environmental justice. We partnered with promotoras and doing, like, some air pollution monitoring. So it's been this, like, really beautiful little space that that is is growing and thriving.

Brian Bienkowski

Excellent. And speaking of being too busy to play piano, you also co-founded the Partners for Equity and Research, which supports undergraduates doing community engaged research. So can you also talk about this, maybe a project or two that you've worked on there, and how you work to center community voices and experiences in that initiative?

Laura Diaz

Yeah, so maybe I could describe a little bit of like, our structure. It's a little bit like, yeah, has some moving pieces, but we are an environmental justice hub that's housed at Sonoma State University, and I co-lead that with Professor Daniel Soto, who's a department chair of Geography, Environment and Planning, and we train undergraduate researchers in community-driven research methods. So I like to think of it as a triangle, the way our partnership works. So we have the university and Dr. Soto's really important. Like, kind of the lead there. He's able to recruit the students at Sonoma State. And then there I, like, I'm another point wearing my nonprofit hat, and then we have our community partners, and they are the North Bay Organizing Project, and the Latinx Student Congress, and our partner there is Manny Morales, and we, with his hope, he recruits students from the Latinx Student Congress, And we have a running Latinx Youth Environmental Justice Council, so they get to come on campus, and Dr. Soto and I train the undergrads to, like, lead these workshops in environmental justice and community health. And it's really amazing. And again, like a lot of the students that we're recruiting, most are Latinx, if not most are first gen and then Dr Soto and I are both Latinx, and we're serving, I think it's 100% Latinx youth EJ council with a Latinx partner. And most of these kids come from a predominantly Latinx frontline EJ community. So it's just like, it's such a beautiful space. And Dr Sota, and I really spent a lot of time thinking about reimagining the academy as a public good, like, how do we make the university a space that actually serves the community? And I think speaking about HSI or Hispanic serving institutions, they are so primed to do that because of who we are, right? And there's a there's trust that's kind of baked in, and just our identity right, apart from, like, our ethics really driving building trust with our partners. And we've been using education as a tool for community deliberation so that we can support these youth as they fight for cleaner air and a more just environment. And so things that we've worked on, and so I think, like that piece of it is, like, more important, almost in like, the stuff that they get to do, because we put in all this work to build this partnership, and now we get to just follow their lead, the youth lead. It's beautiful. And so we've done things like, we've given them air monitors. They get to go out and like, monitor the air and like that data is theirs. And then we teach them the research methods of how to clean that data. So it truly is like a practice of data sovereignty. Like that data is theirs. It does not get pushed out to the cloud. It's on an SD card, and they get to decide what they do with it. And we have a couple other projects, like in the works, but it's been a really like healing practice in some of the environmental justice work I'm privileged to do.

Brian Bienkowski

Well, I bet some of the participants would agree, and the idea of reimagining the academy to be a public good is what you said. And like that is a pretty simple statement, but it's like pretty radical, if you think about the ways universities and institutions have operated for century, over a century. And it's a pretty radical concept, so good on you for for being part of that change. And does this how beautiful to have you speak about Sonoma State University as being pivotal at one point in your life, and now you are, you are one of those people that's that's providing a space for others. So just that full circle is really cool to hear about.

Laura Diaz

Yeah, it's been, it's been pretty special.

Brian Bienkowski

Yeah, for sure. And so you mentioned that you are a mother, so we have had, we actually had a podcast with a couple senior fellows where they discuss being researchers and mothers and how things change them, and it was just one of my favorite podcasts that we've done when I turned the microphone over to them, and I'm wondering just how it has it does has it done the same for you? Has it changed how you've thought about or conducted your research?

Laura Diaz

Yeah, so I came into grad school already being a mom, and so there are ways that it has impacted how I engage in research, for sure, and I think a really, a really, kind of important component of of the work that we do with at Sonoma State, with P4ER. We're also supporting undergraduate students who are also parents, and creating a space where the student parent feels like their whole self is welcome is incredibly important to some of the things that we do. And so there's like, I often bring my son to our workshops, because I know that if I do, then the students can also bring their kids. And so we're really trying to create an atmosphere where motherhood is welcomed, where it's embraced and it's also encouraged. And I think another like piece of being my son's mom that has really impacted me in research, which I feel like this is, again, I'm like, I love education, but that, I think, is a piece that we don't talk about enough in research, is the role that education or knowledge sharing plays in the process of knowledge production. And so if we do research well, but we don't do teaching well, we aren't pushing the edges of that new knowledge enough. And in research, we get to ask new questions, and we get to present that to new learners who have a different worldview than those of us who are asking those questions, so they can write like during the moment research is being done actually impact that research to be a more like to have a fuller angle to it. And so I just, I think about that a lot, because my son is in third grade and just seeing how he's learning and all that stuff. I think, I think a lot about the role of holistic learning and how that can play a big role in healthy development of of children and and research.

Brian Bienkowski

And I'm wondering if there are things that you tips you have, or things that you do to decompress, to cope, to make sure that you're doing okay.

Laura Diaz

I'm a dancer, so I'm a salcera, and I dance with a salsa Maria Dance Company in Oakland. Shout out to my dance family. That is a space where I have to shut my brain off, and it's like you were talking about, like music. I think I've been kind of able to get away with not playing piano for so long, because I've been really intensely dancing and so having, like, an artistic expression for my body has been really important. So like, I that that plays a big role in my own ability to kind of sustain we have work that's justice centered. And the cool thing about that too is that, like, they also really embrace like family. So like, my son will come and and, like, sit and watch practices, which he, like loves doing, which is super cool, because I remember being kid and going to my dad's soccer games and like that being a really like, it actually is, like, a big health promotion piece of my life, right, seeing my parents be active. Um, but anyways, so yeah, dance.

Brian Bienkowski

I think that's a good point too. Like having your children. See, I'm a big fan. I don't have kids. We are, we are child-free, but I have nieces and nephews, and I think it's so important for kids to see their parents as human beings. Like, yes, mom works hard and does research and but mom also dances like that. I don't know, to me, there's something cool about kids seeing their parents as whole human beings. So Laura, before we get to some of the fun questions and get you out of here, what are you optimistic about?

Laura Diaz

this summer, we came off of doing a summer institute for educators, and being able to be in community with educators who are these incredible like, they're the heart of a lot of of their community, like, of their school communities, and the impact that they have on on the kids that they get to teach, like, really does provide a lot of hope for me. And I think, like also being able to partner with youth and seeing just how they're such a raw reflection of society, how they're like, not fully yet assimilated into our social hierarchies. And when they see something that's wrong, like, they call it outright then and there, right? And they're like, dude, let's do something about it. And like, that is the energy that we need in this space, and it's such a privilege to work in partnership to their own EJ activism.

Brian Bienkowski

Awesome. Well, what a beautiful note to end on. So I have three rapid fire questions where you can just answer with one word or a phrase. My dream vacation is

Laura Diaz

Mexico City.

Brian Bienkowski

I feel most creative when I'm

Laura Diaz

Dancing salsa

Brian Bienkowski

if I could have dinner with one person, it would be

Laura Diaz

Leslie Jones.

Brian Bienkowski

Tell me about Leslie Jones?

Laura Diaz

Oh, she's someone I really look up to. She also has a brother who struggled and like seeing the way her autobiography. Is amazing, by the way, but just like the way that she's chosen to like, be strong and push through that and also be authentic and be raw and be herself, is something that I like. I hope that I bring in all the spaces that I have the privilege to navigate through.

Brian Bienkowski

Well, you've certainly brought it to the space today. And I don't know if it's if it's her autobiography or not, but what is the last book you read for fun?

Laura Diaz

I read In the Dream House, which is also an autobiography by Carmen Maria Machado. It's really beautiful. I read a lot. So I also read hood. Just finished reading Hood Feminism, which is an amazing book by Mickey Kendall, and it like talks about how feminism needs to prioritize the hood bipoc woman's experience. It's amazing.

Brian Bienkowski

But Laura, it has been so wonderful to have you on today. I'm so glad you're in this program and to be introduced to your work and your mind and the things that you're thinking about. So thank you so much.

Laura Diaz

Yeah, thank you so much.

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Tree Rings May Reveal Hidden Clues About Water History

By I. Edwards HealthDay ReporterTUESDAY, Dec. 23, 2025 (HealthDay News) — Trees don’t just clean the air, they also keep a quiet record of the...

TUESDAY, Dec. 23, 2025 (HealthDay News) — Trees don’t just clean the air, they also keep a quiet record of the past.New research suggests that tree rings may help scientists uncover missing pieces of environmental history, especially when it comes to water in the midwest. By studying how different tree species respond to wet and dry conditions, researchers say they can better understand how watersheds have changed over time, and how they may change in the future.Watersheds are areas of land that drain water into nearby streams, rivers and lakes. Healthy watersheds help protect drinking water, support wildlife and keep ecosystems balanced, according to the U.S. Environmental Protection Agency. But climate change can put a big strain on these systems, especially when historical data is limited.“One human lifespan is not going to show us the big picture,” study leader Alessandra Bertucci, a graduate student at Ohio State University in Columbus, said in a news release."So using trees to address these gaps of understanding is really important for managing water resources, even in intensively managed watersheds," Bertucci added.Trees typically grow a new ring each year and the size and density of those rings can reflect weather conditions such as droughts, floods and long periods of rain. But not all trees record these events the same way. That’s why the research team found that using multiple tree species gives a clearer picture than relying on just one.The study focused on riparian trees, which grow near rivers and streams in the Midwest. Researchers found that many of these trees are especially good at recording past wet and dry periods, making them useful for understanding regional water patterns.The work was recently presented at a meeting of the American Geophysical Union in New Orleans.To gather their data, researchers collected tree core samples from areas where long-term watershed records are scarce, including Ohio’s Old Woman Creek State Nature Preserve near Lake Erie. They studied three common tree species and compared ring width and density with recorded climate data.Because much of the Midwest is heavily farmed, accurate water data is critical. Bertucci said limited historical records can lead to poor estimates of past floods or droughts, which may affect decisions about water use and conservation.With the updated tree ring data, the team hopes to build models that can help predict how weather patterns and water flow may change in the coming decades.“If we can round out that historical data and understand what to expect, we can better plan for how to manage our water resources in the future,” Bertucci said.Researchers plan to expand their work by sampling more tree species and studying additional watersheds. The findings could help farmers, water managers and communities make smarter decisions about water conservation.“Water is life,” Bertucci said. “We literally cannot live without it, so it’s important to protect and make sure that we are taking care of it, because that is our lifeline.”Research presented at meetings should be considered preliminary, until published in a peer-reviewed journal.SOURCE: Ohio State University, news release, Dec. 19, 2025Copyright © 2025 HealthDay. All rights reserved.

How Bay Area cops changed their approach to mental health calls

A mental health clinician with a bullet-proof vest is helping change the way a Bay Area city responds to some of its emergency calls. That’s what CalMatters’ Cayla Mihalovich found when she visited the San Mateo Police Department earlier this month to check out a new approach for mental health calls.  The city was one […]

Briana Fair, San Mateo Police Department’s mental health clinician, in San Mateo on Dec. 15, 2025. Photo by Manuel Orbegozo for CalMatters A mental health clinician with a bullet-proof vest is helping change the way a Bay Area city responds to some of its emergency calls. That’s what CalMatters’ Cayla Mihalovich found when she visited the San Mateo Police Department earlier this month to check out a new approach for mental health calls.  The city was one of many that searched for a better way to help people in the throes of a mental health crisis. It participated in a 2021 pilot program from San Mateo County that paired law enforcement officers with mental health clinicians in four cities with the aim of freeing up police officers and avoiding unnecessary confrontations.  Rather than police officers having to decide whether to arrest a person, send them to a hospital for a hold or leave them to their own devices, a paired clinician was deployed to provide additional measures such as safety planning, follow-up calls and community mental health resources.  “I fill in the gaps,” said San Mateo Police Department mental health clinician Briana Fair, who builds relationships with people she calls clients and joins officers on some emergency calls. Known as a “co-responder model,” the pilot appeared to work: Involuntary holds decreased about 17% and it reduced the chances of future mental health calls to 911, according to a new study by Stanford University. By reducing the number of involuntary detentions, researchers also estimated that the cities saved as much as $800,000 a year on health costs. Mariela Ruiz-Angel, director of Alternative Response Initiatives at Georgetown Law’s Center for Innovations in Community Safety: “The idea was never about taking cops out of the equation altogether. The idea was that we don’t have to center them as the main response of 911. We don’t have to make public safety about cops. Public safety is about the appropriate response.” Since the end of the two-year pilot, nearly all of San Mateo County cities have rolled out the co-responder model. Cities that participated in the pilot also found a way to sustain the program, including the police department in the city of San Mateo, which currently employs Fair and another part-time clinician. Read more here. Go behind the scenes of our Prop. 50 voter guide: Our team brought the guide to more readers across the state thanks to newsroom partners. Learn more. Dec. 31 deadline: Your gift will have triple the impact thanks to two matching funds, but the deadline is Dec. 31. Please give now. Other Stories You Should Know Gun suicides in rural California A collection of Jeffrey Butler photographs on a table at his daughter’s home in Douglas City on Dec. 4, 2025. Photo by Salvador Ochoa for CalMatters In rural California — where medical and mental health care can be hard to come by — firearm suicides particularly among older men are rattling communities and families who have been left behind, reports CalMatters’ Ana B. Ibarra. Rural counties in Northern California have some of the country’s highest rates of gun suicides among older adults. In Trinity County, for example, at least eight men 70 and older died from an apparent firearm suicide between 2020 and 2024. Over the course of 15 years, the gun suicide rate of adults in this age group in seven northern counties, including Trinity, was more than triple the statewide rate.  In addition to owning more guns, residents in these areas have more limited access to medical and mental health services. When these services are farther away, people often remain in pain for longer because of missed or delayed appointments. In California, more than half of people 70 and over who died by gun suicide had a contributing physical health problem, and over a quarter had a diagnosed mental health condition. Jake Ritter, on the death of his 81-year-old grandfather, Jeffrey Butler, who had health and pain issues and died in Trinity County in 2024 from a self-inflicted gunshot: “I’m sad that he didn’t get the help that he needed, and I’m sad that he felt so strongly that this is the road that he chose.” Read more here. New law to prevent sex abuse at schools Students in a classroom in Sacramento on May 11, 2022. Photo by Miguel Gutierrez Jr., CalMatters By July 2026 all California K-12 schools — including private schools — must have protocols in place to help protect schoolchildren from being sexually abused by educators, as directed by a new state law, writes CalMatters’ Carolyn Jones. The law, which goes into effect Jan. 1, requires schools to enact a number of measures to rein in abuse and hold themselves accountable, including training students, teachers and other school staff to recognize signs of sexual grooming and report misconduct.  The law’s most notable provision is the creation of a database that keeps track of teachers credibly accused of abuse. The database will be available to schools so that administrators can use it to vet prospective teachers. The database is intended to curb the practice of schools re-hiring teachers who have resigned from another school after being accused of sexual misconduct. Read more here. And lastly: Power-guzzling data centers An employee works in a Broadcom data center in San Jose on Sept. 5, 2025. Photo by Brittany Hosea-Small, Reuters A recent report finds electricity use and carbon emissions from California data centers nearly doubled in recent years, with water use climbing even more. CalMatters’ Alejandro Lazo and video strategy director Robert Meeks have a video segment on the environmental report as part of our partnership with PBS SoCal. Watch it here. SoCalMatters airs at 5:58 p.m. weekdays on PBS SoCal. California Voices CalMatters contributor Jim Newton: Despite making gains on her promise to reduce Los Angeles’ homelessness population, Mayor Karen Bass battles a difficult perception problem. California’s elected leaders must oppose the Trump administration’s plans to expand oil and gas drilling on the state’s public lands, writes Ashley McClure, East Bay physician and co-founder of Climate Health Now. Reader reaction: CARE Court can produce positive results in some cases, but it should not be treated as an automatic path to LPS conservatorship, writes Tom Scott, executive director of the California State Association of Public Administrators, Public Guardians and Public Conservators. Other things worth your time: Some stories may require a subscription to read. State attorneys general sue Trump administration over efforts to shutter CFPB // Politico Why cities spend your tax dollars on lobbyists // The Sacramento Bee  CA’s homeless ‘purgatory’ leaves thousands on a waitlist to nowhere // The San Francisco Standard How Trump broke CA’s grip on the auto market // Politico Central Valley surpassed all of CA in job losses this year // The Fresno Bee How private investors stand to profit from billions in LA County sex abuse settlements // Los Angeles Times San Diego just fast-tracked new fire-safety rules for homes // The San Diego Union-Tribune Chronic illness and longing define life in the Tijuana River valley // inewsource

Faulty Genes Don't Always Lead To Vision Loss, Blindness

By Dennis Thompson HealthDay ReporterTUESDAY, Dec. 23, 2025 (HealthDay News) — Genetics aren’t necessarily destiny for those with mutations thought...

By Dennis Thompson HealthDay ReporterTUESDAY, Dec. 23, 2025 (HealthDay News) — Genetics aren’t necessarily destiny for those with mutations thought to always cause inherited blindness, a new study says.Fewer than 30% of people with these genetic variants wind up blind, even though the faulty genes had been thought to cause blindness in 100% of those with them, according to findings published Dec. 22 in the American Journal of Human Genetics.The results could shake up a central belief in genetics, that faulty genes always lead to rare inherited disorders. These disorders are called Mendelian diseases, named after the famed genetics researcher Gregor Mendel.“These findings are striking and suggest that the traditional paradigm of Mendelian diseases needs to be updated,” senior researcher Dr. Eric Pierce, director of the Ocular Genomics Institute at Mass Eye and Ear in Boston, said in a news release.The study focused on inherited retinal degenerations (IRDs), a group of genetic diseases that lead to progressive vision loss and eventual blindness. They cause the light-sensing cells along the back wall of the eye to break down and die off.For the study, researchers created a list of 167 variants in 33 genes that have been previously linked to IRDs.The team then screened nearly 318,000 people participating in a National Institutes of Health research program for the presence of those variants, and found 481 with IRD-causing genetics.However, only 28% of those people had suffered any form of retinal disease or vision loss, and just 9% had a formal IRD diagnosis, results showed.The team double-checked their work by using data on about 100,000 participants in another large-scale study, the UK Biobank.Again, only 16% to 28% of people with IRD-linked genetics had suffered definite or possible signs of vision loss or retinal damage, researchers said.The results suggest that something else is happening alongside a person’s genetic risk to make them wind up with IRD, including environmental factors or other faulty genes, researchers said.“We think these findings are important for understanding IRDs and other inherited diseases,” researcher Dr. Elizabeth Rossin, an investigator at Mass Eye and Ear, said in a news release.“We look forward to finding modifiers of disease and using that new knowledge to improve care for patients with IRDs and potentially other inherited eye disorders,” Rossin said.Future studies will examine other Mendelian disorders, and look for other genetic and environmental factors that could cause these diseases.“The large number of individuals that do not develop an IRD despite having a compatible genotype provide an opportunity to design well-powered research studies to discover disease modifiers, which could spur development of novel therapies,” lead researcher Dr. Kirill Zaslavsky said in a news release. Zaslavsky performed this research during an Inherited Retinal Disorders fellowship at Mass Eye and Ear.SOURCE: Mass General Brigham, news release, Dec. 22, 2025What This Means For YouPeople with genetics linked to vision loss and blindness might be able to ward off these problems, if researchers figure out what’s behind the diseases.Copyright © 2025 HealthDay. All rights reserved.

As oil and gas companies pivot to plastic, California neighborhoods become sacrifice zones again

As oil and gas companies pivot to plastic, certain California neighborhoods become unhealthy sacrifice zones again.

Guest Commentary written by Veronica Herrera Veronica Herrera is a professor of urban planning at UCLA Daniel Coffee Daniel Coffee is a researcher at UCLA’s Luskin Center for Innovation The fossil fuel industry is pivoting. As demand for gasoline declines, oil and gas companies are betting their future on plastic. What once powered our cars is now being refined, cracked and polymerized into bottles, packaging and single-use products that will outlive us all. This shift isn’t just a climate concern — it’s a public health crisis. Plastics are fossil fuels in another form. And the communities most exposed to their production bear the highest health burdens. A new report from the UCLA Luskin Center for Innovation on what defines a plastic-burdened community traces how this expanding plastic economy maps directly onto California’s oil and gas footprint.  Even as California celebrates its climate leadership, our neighborhoods remain entwined with the legacies of fossil fuel infrastructure. More than 2.5 million Californians live within a kilometer of an active or idle oil or gas well. There are pumpjacks in Inglewood, refineries along the Wilmington corridor and wells beside schools in Kern County.  Refinery infrastructure — much of it feeding plastic precursor production — also is heavily concentrated in Los Angeles County, the most populous region in the state. Unequal exposure The science is unequivocal: living near oil and gas development is linked to a wide array of health harms: respiratory disease, cardiovascular illness, adverse birth outcomes and elevated cancer risk. The higher odds for these conditions persist even when controlling for socioeconomic and environmental factors.  In California and beyond, research shows pollutants from drilling and refining — such as volatile organic compounds, nitrogen oxides, particulate matter and formaldehyde — degrade air quality and increase asthma, heart attack and low-birth-weight rates. The burden of these exposures falls unevenly, our analysis shows.  Neighborhoods closest to wells and refineries have far higher proportions of Latino and Black residents, lower incomes and greater health vulnerabilities. On average, for each refinery within 1.5 miles of a community, the median household income is nearly $11,000 lower, poverty rates are 5.5% higher and emergency-room visits for asthma and heart disease are significantly elevated.  The environmental injustices of the oil age are being repackaged in the plastic economy. Globally, the Organisation for Economic Co-operation and Development projects plastic production will triple by 2060. Petrochemicals already account for roughly 14% of oil use and by mid-century could drive nearly half of global oil demand. In other words, even as we transition away from burning fossil fuels, we are locking ourselves into new forms of dependence — embedded in the packaging we discard daily. Recognizing this link is critical as California prepares to implement the Plastic Pollution Mitigation Fund under Senate Bill 54, a plastics recycling and pollution prevention law signed in 2022. The fund will direct hundreds of millions of dollars from the plastics industry to communities harmed by pollution.  Administered wisely, the fund could be a catalyst for mitigating the adverse health impacts of plastics and could create a transformative shift away from plastic production, use and disposability, building on the plastic reduction efforts required of the industry under SB 54. Plastic pollution is not just about littered beaches or overflowing landfills; it begins long before a product reaches a store shelf.  If California truly intends to lead on climate and environmental justice, it must see plastic for what it is — the fossil fuel industry’s new frontier — and it must ensure that communities long treated as sacrifice zones become the first to benefit from solutions.

Interoception Is Our Sixth Sense, and It May Be Key to Mental Health

Disruptions in interoception may underlie anxiety, eating disorders, and other mental health ailments

By the time Maggie May, an Arkansas resident in her 30s, was admitted to a psychiatric clinic in 2024, she had been struggling for years with atypical anorexia nervosa, an eating disorder that leads to severe food restriction and profound disturbances in body image. (Her name has been changed for privacy.) She had already tried traditional interventions with a psychotherapist and a dietitian, but they had failed to improve her condition. So when May heard about a trial of a new and unconventional therapy, she jumped at the opportunity.The treatment was unusual in that alongside talk therapy, May underwent several sessions in a sensory-deprivation chamber: a dark, soundproof room where she floated in a shallow pool of water heated to match the temperature of her skin and saturated with Epsom salts to make her more buoyant. The goal was to blunt May’s external senses, enabling her to feel from within—focusing on the steady thudding of her heart, the gentle flow of air in and out of her lungs, and other internal bodily signals.The ability to connect with the body’s inner signals is called interoception. Some people are better at it than others, and one’s aptitude for it may change. Life events can also bolster or damage a person’s interoceptive skills. Sahib Khalsa, a psychiatrist and neuroscientist at the University of California, Los Angeles, and his colleagues think a disrupted interoception system might be one of the driving forces behind anorexia nervosa. So they decided to repurpose a decades-old therapy called flotation-REST (for “reduced environmental stimulation therapy”) and launched a trial with it in 2018. They hypothesized that in people with anorexia and some other disorders, an underreliance on internal signals may lead to an overreliance on external ones, such as how one looks in the mirror, that ultimately causes distorted body image, one of the key factors underlying these conditions. “When they’re in the float environment, they experience internal signals more strongly,” Khalsa says. “And having that experience may then confer a different understanding of the brain-body relationship that they have.”On supporting science journalismIf you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.Studies have implicated problems with this inner sense in a wide variety of conditions, including anxiety disorders, post-traumatic stress disorder and borderline personality disorder. Some researchers and clinicians now think that problems in interoception might contribute to many mental illnesses. Alongside this research, which itself is complicated by challenges in testing design and by a less than clear understanding of interoception, other groups are also developing therapies that aim to target this inner sense and boost psychological well-being.This work is circling in on a central message: the body and mind are inextricably intertwined. “We have always thought about [mental health conditions] as being in the brain or the mind,” says Camilla Nord, a professor of cognitive neuroscience at the University of Cambridge. But clinicians have long noted that people with mental illness frequently report physical symptoms such as abnormalities in heartbeats, breathing and appetite, she adds.The idea that the body can influence the mind dates back centuries. In the 1800s two psychologists on opposite ends of the globe independently proposed a then novel idea: emotions are the result of bodily reactions to a specific event. Called the James-Lange theory after its founders, American psychologist William James and Danish doctor Carl Lange, this view ran counter to the long-dominant belief that emotions were the cause, not a consequence, of corresponding physiological changes.Although this notion has garnered critics, it inspired a slew of studies. The 1980s saw a surge of interest in the role of physiological signals in panic disorders. Researchers discovered that they could bring on panic attacks by asking people to inhale carbon dioxide–enriched air, which can increase breathing rates, or by injecting them with isoproterenol, a drug that increases heart rate.Breathing rate can affect how someone perceives the intensity and unpleasantness of pain.These findings led some psychologists to suggest that physical sensations were the primary trigger of panic attacks. In the early 1990s Anke Ehlers, a psychologist then at the University of Göttingen in Germany, and her team examined dozens of people with panic disorders and reported that these patients were better able to perceive their heartbeats than healthy individuals—and that this greater awareness was linked to more severe symptoms. On top of that, a small, preliminary study by Ehlers of 17 patients revealed that those who were more skilled at this task were more likely to relapse and start having panic attacks again. These observations hinted at a two-way dynamic: not only could physical sensations within the body cause psychological effects, but the ability to perceive and interpret those signals—in other words, one’s interoceptive ability—could have a profound influence on mental health.Over the years a growing body of evidence has indicated that interoception plays an important role in shaping both emotions and psychological health. A large chunk of this work has focused on the heart. With every heartbeat, blood rushes into the arteries and triggers sensors known as baroreceptors, which shoot off messages to the brain conveying information about how strongly and rapidly the heart is beating.In one pivotal 2014 study, Hugo Critchley, a neuropsychiatrist at Brighton and Sussex Medical School in England, and his team reported that this process can affect a person’s sensitivity to fear. By monitoring volunteers’ heartbeats while they viewed fearful or neutral faces, they found that people detected fearful faces more easily and judged them as more intense when their heart was pumping out blood than when it was relaxing and refilling. But participants with higher levels of anxiety often perceived fear even when their hearts relaxed.Researchers have also demonstrated that bodily signals such as breathing patterns and gut rhythms can influence emotional reactions. People are quicker to react to fearful faces while breathing in than while breathing out, and breathing rate can affect how someone perceives the intensity and unpleasantness of pain.In more recent work, some neuroscientists have turned their attention to the gastrointestinal system. In 2021 Nord and her colleagues discovered that people given a dose of an antinausea drug that affects gut rhythms—processes within the stomach that help digestion—were less likely to look away from pictures of feces than they normally would have been. These disgust-related visceral signals, Nord speculates, may be relevant to eating disorders. “It’s possible that some of these signals contribute to feeling aversion to signals of satiety, making satiety very uncomfortable, a feeling you don’t want to feel,” she says.But how, exactly, do disruptions in interoception come about? Many researchers suspect it may have to do with our brain’s predictions going awry. Interoception, like our other senses, feeds information to the brain, which some neuroscientists suggest is a prediction machine: it constantly uses our prior knowledge of the world to make inferences about incoming signals. In the case of interoception, the brain attempts to decode the cause of internal sensations. If its interpretations are incorrect, they may lead to negative psychological effects—for example, if a person erroneously assumes their heart rate is elevated, they may begin to feel anxious in the absence of a threat. And if a person has learned to associate pangs of hunger with disgust, they might severely restrict how much food they consume.Inner signals can be much more ambiguous than the external input from other senses such as sight and hearing. So the brain’s prior information about these internal signals becomes especially important, says André Schulz, a professor of psychology at the University of Luxembourg.To better understand and assess potential mismatches in subjective and objective measures of our bodily signals, researchers have developed a framework that captures the different dimensions in which interoceptive processing occurs. In 2015 Sarah Garfinkel, then a postdoctoral researcher in Critchley’s group at Brighton and Sussex, and her colleagues proposed a model to clearly differentiate three categories of interoceptive processing: interoceptive accuracy (how well someone performs, objectively, on relevant tasks such as heartbeat detection), interoceptive sensibility (a person’s subjective evaluation of their interoceptive abilities), and interoceptive awareness (how well that self-assessment matches their actual abilities).Along with their collaborators, Garfinkel, now at University College London, and Critchley have found that in autistic adults there is a link between anxiety and a poor ability to predict one’s interoceptive skill—in this case, one’s sensitivity to heartbeat. In a study of 40 people (20 of whom had autism), they and their colleagues discovered that individuals with autism performed worse on a heartbeat-detection task and were more likely to overestimate their interoceptive abilities than those without autism. This disconnect was more pronounced in people with higher levels of anxiety, suggesting that errors in the ability to predict bodily signals may contribute to feelings of anxiety, Critchley says.In recent years the list of psychiatric conditions linked to interoceptive dysfunctions has grown. Some, such as panic and anxiety disorders, are associated with heightened attention to one’s internal processes; others, such as borderline personality disorder and schizophrenia, may be tied to a blunting of one’s ability to connect with these signals. In a review of interoception research, published in 2021, Nord and her colleagues examined 33 studies that collectively involved more than 1,200 participants. They found that people with a range of psychiatric disorders, including anxiety disorders and schizophrenia, shared similar alterations in the insula, a key brain region linked with interoception during body-sensing-related tasks.Overall, though, studies show mixed results. “If you look across the literature, [however many] studies have found an association with, say, anxiety, [a roughly] equal amount will have not found a relationship or found it in the other direction,” says Jennifer Murphy, a psychologist at the University of Surrey in England.The varying results could stem from the challenges associated with studying interoception, which can be difficult to both manipulate and measure. Take cardiac interoception. In most early studies in this domain, participants counted their pulses, but this test may measure people’s estimate of their heart rate rather than how well they can feel their heartbeat. This flaw was perhaps most clearly demonstrated in a 1999 study in which people with pacemakers reported their heart rates while experimenters (with the participants’ consent) secretly tuned their pacemakers’ timing up or down. Participants’ self-reported heart rates didn’t follow the shifts in the actual pulses; their beliefs about how their heart rates should be changing had a much stronger influence.To address these limitations, scientists have been devising better study methods. Micah Allen, a neuroscientist at Aarhus University in Denmark, and his team have developed a heart-rate-discrimination task in which people are asked to report whether a series of tones is faster or slower than their current pulse, allowing researchers to quantify how sensitive an individual is to their heartbeats. Allen and his colleagues are now testing breath interoception in a similar way. Using a computer-controlled device, the researchers can make precise changes to the air resistance someone feels when they inhale through a tube. By doing so, they can quantify how well the person can detect changes in their breathing.Using these new techniques, Allen’s team has learned that an individual’s interoceptive chops don’t translate across all domains. In a recent preprint study of 241 people, they found that a person’s ability to perceive their heart rate wasn’t correlated to their performance in a breathing-resistance task.Researchers have also been combining these behavioral tests with measurements of brain activity. One example is the heartbeat-evoked potential, a spike in brain signaling that occurs each time the heart beats. Scientists have found that changes in these signals, which can be detected with noninvasive brain-imaging techniques such as electroencephalography, are linked to accuracy in heartbeat-detection tasks and to the ability to process emotions. Similar brain signals related to organs such as the gut and those of the respiratory system have been linked to the ability to perceive sensations within those organs.These studies indicate that interoception abilities don’t align across a person’s bodily functions, from breathing to heart rate to gut rhythms. It’s therefore difficult to know whether the conflicting findings about the role of interoception disruptions in mental disorders mean there is no meaningful relation to be found or whether the issue is that researchers have simply not been using the right task or studying the most relevant system or level of interoception, Murphy says. “It’s very unlikely that every condition will have the same bit of interoception disrupted.”Untangling how, exactly, interoception is disrupted in people with mental illness remains an active area of investigation. Some experts say answers may come from treatment trials investigating whether interventions that target disturbances in this inner sense might boost mental health. Many such studies are currently underway.“To understand what interoception is, we need to manipulate it,” Allen says. “And to understand its role as a biomarker, as something that is related to mental health, we also need to manipulate it.”Jane Green knows stressful situations can have immediate effects on her body. For Green, who has autism, reading a piece of bad news or dealing with a face-to-face confrontation may set off a chain reaction in her body: a rush of adrenaline followed by a pounding heart, bloating and itchiness, among other physical reactions.Such responses may be linked to an inability to read one’s inner body. In 2019 she took part in a clinical trial in which Critchley, Garfinkel and their colleagues sought to test just that—how resolving a discrepancy between a person’s perceived interoceptive abilities and reality could improve anxiety levels in adults with autism spectrum disorder. The intervention in the study focused on tasks that involved heartbeat detection.After training and testing 121 participants (half of whom were randomly assigned to receive a noninteroception-based control task) across six sessions, the team reported in a 2021 paper that this treatment successfully reduced anxiety in their participants and that this effect persisted for at least three months.Participating in the trial was a “real turning point” in Green’s ability to deal with anxiety, she says. “I recognize now that when I’m stressed, whether I like it or not, my body reacts,” she explains. Although she still experiences physical reactions to emotionally charged situations, they are often less severe than they were prior to the treatment. And her knowledge of what’s happening in her body has made it easier to cope, she adds. Green is chair and founder of SEDSConnective, a charity dedicated to neurodivergent people with connective tissue disorders such as Ehlers-Danlos syndromes. These conditions tend to overlap with anxiety disorders, and Green is now advocating for interoception-based therapies to help affected people.A person’s interoceptive capabilities might be especially malleable during early childhood or adolescence.For May, who participated in the flotation-REST trial, what she learned from being cut off from the external world helped her to get through an inpatient stay at an eating-disorder clinic where she was being forced to eat—and, as a result, gain weight. “You’re working on the things that drove you to come in the first place, but at the same time, your distress with your body is getting worse and worse,” she says. When she was in the flotation chamber, however, May’s awareness of her physical body would slip away, reducing some of the negative feelings she had about herself and quieting the worries that swirled in her mind. “You can’t tell where your body stops and the water begins,” May says. “Because you’re completely buoyant, you also have no sense of the ways that your body distresses you.”Flotation-REST shows promise: in a clinical trial of 68 people hospitalized for anorexia nervosa who were randomly assigned to the therapy or a placebo, Khalsa’s team found that six months after treatment, those who received therapy reported less body dissatisfaction than those who did not. The researchers have also created a version of this therapy for anxiety and depression. In early-stage clinical trials, this intervention appeared to reduce the symptoms of those disorders. Now they are investigating whether this therapy might also benefit people with amphetamine use disorder.Other interoception-based treatments are also under investigation. At Emory University, a group led by clinical psychologist Negar Fani has been examining the effects of combining a mindfulness-based intervention with a wearable device that delivers vibrations corresponding to a person’s breaths. In a group of trauma-exposed individuals, this intervention increased the participants’ confidence in their bodily signals more than the mindfulness-based intervention alone. Even long after these sessions, people report being able to recall the feeling of breath-synced vibrations, Fani says. “It helps to ground them, brings them back into the present moment. They can access their body signals and figure out what they want to do with them.” The team is now conducting a follow-up study to see whether this treatment can improve mental well-being in people who have experienced trauma.In yet another ongoing trial, Nord is collaborating with Garfinkel on a series of studies aimed at understanding in which body systems—and in which of the three dimensions (accuracy, sensibility and awareness)—interoception is altered in people with various mental disorders, among them anxiety and depression. As part of that effort, the researchers are testing interventions, including interoceptive training, mindfulness therapy—to help improve the mind-body connection—and stimulation of the insula with focused ultrasound.Scientists still have plenty of questions to answer about interoception. One major open question is how differences in interoception arise. Some of our interoceptive abilities may begin taking shape during early infanthood. Scientists have discovered that babies as young as three months show differences in the amount of time they spend looking at colored shapes moving either in or out of sync with their heartbeats—a finding that suggests our ability to sense heart rhythms is present at this young age.Interactions with caregivers during one’s first years may play a crucial role in determining how in tune a person becomes with their body. The way a parent responds to an infant’s cues about being hungry, tired or in pain, for instance, may shape how well the child is able to interpret those signals later in life. Although direct evidence for this hypothesis is still lacking, studies have shown that an individual’s early caregiving environment can shape how their body responds to stress.Other factors such as a person’s sex or various environmental conditions, including adversity in early life, may also influence how interoception develops. Some research suggests that adverse experiences, especially chronic, interpersonal trauma early in life, may be key contributors. Clinicians have long observed that traumatic events can lead people to detach or “dissociate” from the body, and some researchers have proposed that this disconnect can disrupt interoceptive processes over time. For a subset of people, these alterations might be linked to an increased likelihood of self-harm and suicide: one 2020 study, for example, found that people with a history of suicide attempts and a diagnosed mental illness, such as anxiety, PTSD or depression, were worse at an interoceptive heartbeat-detection task than those who had the same ailments but had not attempted to take their own life.A person’s interoceptive abilities may change over time. Interoceptive capabilities might be especially malleable during certain life stages: periods such as early childhood, when a person is just learning how to interpret their bodily signals, or adolescence, when puberty is creating a whirlwind of physical changes. It might be one mechanism, among many, that explains why “these times tend to be risk periods for the development of mental illness,” Murphy says.The boundaries of interoception are also only beginning to be understood. In recent years some scientists have become interested in probing the links between the immune system and the brain, which are in constant conversation. An emerging body of work suggests that the brain both keeps tabs on and influences what happens in the immune system, and the immune system can in turn affect the brain. Studies have linked dysfunction in the immune system—namely, inflammation—to mental illnesses such as depression, psychosis and trauma-related disorders. The immune system may affect our mental states over much longer time scales than, say, the heart, which can influence our emotional experiences in real time.Understanding the mysteries of interoception may lead to better therapies for illnesses of the mind—and the body. Some researchers believe that understanding interoception may ultimately be helpful for treating physical symptoms as well. Schulz and his team, for instance, are currently evaluating interoception-based treatments for chronic fatigue syndrome (also known as myalgic encephalomyelitis), a complicated disorder that causes a range of symptoms, including severe tiredness. “Interoception has so much relevance to health in general,” Fani says. “We can’t ignore it anymore.”IF YOU NEED HELPIf you or someone you know is struggling or having thoughts of suicide, help is available. Call or text the 988 Suicide & Crisis Lifeline at 988 or use the online Lifeline Chat at chat.988lifeline.org.

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