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The key to improving global health? Radical listening

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Friday, November 1, 2024

In 1505, Poland’s parliament adopted a transformational piece of legislation. Translated as “Nothing new without the common consent,” the new law redistributed political power by forbidding the king from issuing decrees without first getting parliamentary approval. This same principle, streamlined to “Nothing about us without us,” has underpinned popular social movements of our time. It’s the defining position of the global disability rights movement. It’s a rallying cry for people living with HIV/AIDS. And it’s become a guiding ideal in global health. In May, the World Health Assembly passed a resolution urging governments to ensure social participation in every area of health, with a focus on promoting voices of the vulnerable and marginalized. Although the global health field has certainly taken steps toward more community inclusion, the power to drive agendas and shape interventions remains with the institutions. To choose an obvious example, the global response to Covid-19 has been largely top-down. A 2021 analysis of the World Health Organization’s Covid-19 interventions dataset showed that “bottom-up” approaches constituted just 7 percent of public health and social measures implemented. Even then, they mainly constituted “one-way information dissemination efforts via mass media and web-based channels; they were rarely reflective of bottom-up, participatory approaches to engage communities on the protective behaviours,” the authors wrote. This centralizing of power impedes global health everywhere. To be sure, global health institutions possess an immense trove of critical knowledge and capabilities. But they don’t typically have intimate knowledge of how environmental, social, and cultural factors impact people’s health at the community level, where all implementation happens. Further complicating the matter, research points to mismatched priorities between health professionals and community residents, while residents perceive few options for communicating with health officials. This creates harmful information silos and knowledge hierarchies on a macro level, too; it’s nearly impossible for local communities to share their needs or propose solutions via scientific journals and conferences, the traditional avenues for global health communications. To make global health truly participatory, the world’s health institutions must adopt a radical approach to listening to everyday people. Listening must become global health’s lynchpin. It’s nearly impossible for local communities to share their needs or propose solutions via scientific journals and conferences, the traditional avenues for global health communications. With emerging practices like narrative medicine and participatory action research, clinical health care spaces, therapeutic environments, and nonprofit workplaces have begun to embrace radical listening as a discipline. The driving idea is that people closest to a problem are best positioned to find solutions, which health professionals can help implement by providing resources and critical technical capabilities. A commitment to radical listening would transform global health for the better. Consider the experience of communities in Borneo — an island that’s home to poor, rural villages scattered throughout one of the world’s major rainforests, threatened by deforestation. Before attempting to implement any interventions, a team led by the nongovernmental organization Alam Sehat Lestari worked as a local partner with the international nonprofit Health In Harmony, which one of us founded. The team conducted more than 400 hours of listening sessions with nearly 500 community representatives, including farmers, religious leaders, teachers, women’s groups, and other community members. Those listening sessions revealed a problem common across the region: Despite depending on their precious forests, residents often resorted to illegal logging to pay for access to basic health care. This insight led communities to design a holistic solution for themselves. They invited health professionals to help establish nearby health facilities, with a brilliant incentive: The cost of care would be discounted for communities that halted or reduced illegal logging. People could also barter for health services with seedlings or manure, to be used for forest restoration and farming. A peer-reviewed evaluation of the approach found that it helped to improve health care access for local communities. At the same time, they found a 90 percent reduction in households relying on illegal logging as a primary income source — with greater access to health services corresponding to greater decreases in logging activity. Communities gave up logging to such an extent that it reduced forest loss by about 70 percent and saved $65 million worth of carbon compared with other protected areas in the country. Holistic strategies like these are waiting to be unleashed in local communities all around the world. Even when communities have solutions, it’s hard for them to bring them to the attention of the professional global health community. As a result, we have enforced knowledge hierarchies that perpetuate information silos. The good news is that in today’s digital age, it’s never been easier to gather and broadcast local perspectives. Instead of primarily broadcasting their own views, global health institutions can nurture communications networks that solicit local input and create opportunities for mutual learning. As one of us recently argued in the journal Nature Medicine, podcasting, as a medium, is especially well suited for bringing local leaders into public dialogue with institutions. Coincidentally, the pandemic saw audiences for global health podcasts, such as Public Health On Call, Public Health Insight, and Pandemic Planet, grow dramatically. Even when communities have solutions, it’s hard for them to bring them to the attention of the professional global health community. Seeing the opportunity, the Special Program for Research and Training in Tropical Diseases, or TDR, created the Global Health Matters podcast, which one of us hosts, as an intentional way to dismantle silos that have stifled global health dialogue. (TDR is co-sponsored by the WHO, UNICEF, the U.N. Development Program, and the World Bank.) The podcast has attracted listeners from more than 180 countries by featuring not just renowned experts but also emerging voices, with a focus on elevating perspectives from low- and middle-income countries. At the time Poland’s Parliament wrested power from the king with its cry of “Nothing about us without us,” it was made up solely by men from the noble class. We’ve come a long way since then, but in most countries health authorities still occupy rarefied ground. While global health institutions, officials, and professionals are indispensable, we must broaden our perspective on who counts as an expert. Local communities have essential insights for addressing their health challenges. It’s time we listen.  Dr. Kinari Webb is the founder of the nonprofit Health In Harmony and completed her training in family medicine. She regularly speaks on health care, community involvement, and the link between human and environmental health.  Dr. Garry Aslanyan is Manager of Partnerships and Global Engagement at the Special Program for Research and Training in Tropical Diseases (TDR), and hosts the Global Health Matters podcast. Paul Martin Jensen, a science communications consultant, assisted Aslanyan and Webb with editing, research, and sourcing for this piece. This article was originally published on Undark. Read the original article. Read more about public health

Public health professionals must engage local communities to learn about their needs and proposed solutions

In 1505, Poland’s parliament adopted a transformational piece of legislation. Translated as “Nothing new without the common consent,” the new law redistributed political power by forbidding the king from issuing decrees without first getting parliamentary approval.

This same principle, streamlined to “Nothing about us without us,” has underpinned popular social movements of our time. It’s the defining position of the global disability rights movement. It’s a rallying cry for people living with HIV/AIDS. And it’s become a guiding ideal in global health. In May, the World Health Assembly passed a resolution urging governments to ensure social participation in every area of health, with a focus on promoting voices of the vulnerable and marginalized.

Although the global health field has certainly taken steps toward more community inclusion, the power to drive agendas and shape interventions remains with the institutions. To choose an obvious example, the global response to Covid-19 has been largely top-down. A 2021 analysis of the World Health Organization’s Covid-19 interventions dataset showed that “bottom-up” approaches constituted just 7 percent of public health and social measures implemented. Even then, they mainly constituted “one-way information dissemination efforts via mass media and web-based channels; they were rarely reflective of bottom-up, participatory approaches to engage communities on the protective behaviours,” the authors wrote.

This centralizing of power impedes global health everywhere. To be sure, global health institutions possess an immense trove of critical knowledge and capabilities. But they don’t typically have intimate knowledge of how environmental, social, and cultural factors impact people’s health at the community level, where all implementation happens.

Further complicating the matter, research points to mismatched priorities between health professionals and community residents, while residents perceive few options for communicating with health officials. This creates harmful information silos and knowledge hierarchies on a macro level, too; it’s nearly impossible for local communities to share their needs or propose solutions via scientific journals and conferences, the traditional avenues for global health communications.

To make global health truly participatory, the world’s health institutions must adopt a radical approach to listening to everyday people. Listening must become global health’s lynchpin.

It’s nearly impossible for local communities to share their needs or propose solutions via scientific journals and conferences, the traditional avenues for global health communications.

With emerging practices like narrative medicine and participatory action research, clinical health care spacestherapeutic environments, and nonprofit workplaces have begun to embrace radical listening as a discipline. The driving idea is that people closest to a problem are best positioned to find solutions, which health professionals can help implement by providing resources and critical technical capabilities.

A commitment to radical listening would transform global health for the better. Consider the experience of communities in Borneo — an island that’s home to poor, rural villages scattered throughout one of the world’s major rainforests, threatened by deforestation. Before attempting to implement any interventions, a team led by the nongovernmental organization Alam Sehat Lestari worked as a local partner with the international nonprofit Health In Harmony, which one of us founded. The team conducted more than 400 hours of listening sessions with nearly 500 community representatives, including farmers, religious leaders, teachers, women’s groups, and other community members.

Those listening sessions revealed a problem common across the region: Despite depending on their precious forests, residents often resorted to illegal logging to pay for access to basic health care. This insight led communities to design a holistic solution for themselves. They invited health professionals to help establish nearby health facilities, with a brilliant incentive: The cost of care would be discounted for communities that halted or reduced illegal logging. People could also barter for health services with seedlings or manure, to be used for forest restoration and farming.

A peer-reviewed evaluation of the approach found that it helped to improve health care access for local communities. At the same time, they found a 90 percent reduction in households relying on illegal logging as a primary income source — with greater access to health services corresponding to greater decreases in logging activity. Communities gave up logging to such an extent that it reduced forest loss by about 70 percent and saved $65 million worth of carbon compared with other protected areas in the country.

Holistic strategies like these are waiting to be unleashed in local communities all around the world. Even when communities have solutions, it’s hard for them to bring them to the attention of the professional global health community. As a result, we have enforced knowledge hierarchies that perpetuate information silos.

The good news is that in today’s digital age, it’s never been easier to gather and broadcast local perspectives. Instead of primarily broadcasting their own views, global health institutions can nurture communications networks that solicit local input and create opportunities for mutual learning. As one of us recently argued in the journal Nature Medicine, podcasting, as a medium, is especially well suited for bringing local leaders into public dialogue with institutions. Coincidentally, the pandemic saw audiences for global health podcasts, such as Public Health On CallPublic Health Insight, and Pandemic Planet, grow dramatically.

Even when communities have solutions, it’s hard for them to bring them to the attention of the professional global health community.

Seeing the opportunity, the Special Program for Research and Training in Tropical Diseases, or TDR, created the Global Health Matters podcast, which one of us hosts, as an intentional way to dismantle silos that have stifled global health dialogue. (TDR is co-sponsored by the WHO, UNICEF, the U.N. Development Program, and the World Bank.) The podcast has attracted listeners from more than 180 countries by featuring not just renowned experts but also emerging voices, with a focus on elevating perspectives from low- and middle-income countries.

At the time Poland’s Parliament wrested power from the king with its cry of “Nothing about us without us,” it was made up solely by men from the noble class. We’ve come a long way since then, but in most countries health authorities still occupy rarefied ground. While global health institutions, officials, and professionals are indispensable, we must broaden our perspective on who counts as an expert. Local communities have essential insights for addressing their health challenges. It’s time we listen.


 Dr. Kinari Webb is the founder of the nonprofit Health In Harmony and completed her training in family medicine. She regularly speaks on health care, community involvement, and the link between human and environmental health. 

Dr. Garry Aslanyan is Manager of Partnerships and Global Engagement at the Special Program for Research and Training in Tropical Diseases (TDR), and hosts the Global Health Matters podcast.

Paul Martin Jensen, a science communications consultant, assisted Aslanyan and Webb with editing, research, and sourcing for this piece.

This article was originally published on Undark. Read the original article.

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Trees and Student Test Scores: What's the Link?

By Dennis Thompson HealthDay ReporterTHURSDAY, Jan. 2, 2025 (HealthDay News) -- Tree-lined streets and lush public parks appear to provide city...

By Dennis Thompson HealthDay ReporterTHURSDAY, Jan. 2, 2025 (HealthDay News) -- Tree-lined streets and lush public parks appear to provide city schoolkids a brain boost.Chicago students’ test scores suffered when an invasive insect wiped out half the city’s ash trees, researchers reported in the journal Global Environmental Change.“We found that test scores in areas with ash borer infestations were reduced after the onset of those infestations, relative to unaffected areas that were similar,” lead researcher Alberto Garcia, an economics professor with the University of Utah, said in a news release from the college.Prior studies have found that students in neighborhoods with greater tree cover have better test scores, researchers said in background notes.The emerald ash borer provided a chance to gather more evidence, unfortunately.The ash borer has killed millions of ash trees along the streets and yards of Midwestern cities, researchers said.The invasive pest killed off half of Chicago’s ash trees between 2010 and 2020, leaving the remaining half dying or in decline, researchers said. Ash trees account for 18% of Chicago’s street trees.For this study, researchers tracked students’ standardized test scores from grades 3 through 8, between 2003 and 2012, to see whether the loss of the trees might affect their academic performance.“We got kind of lucky that the state of Illinois was administering this standardized test in that same window when the ash borer first arrived in the area,” Garcia said. “Every school in Illinois was taking the same test, so we had consistent data across schools and through time.”Results show that 1.2% fewer students met or exceeded standardized testing benchmarks in areas hit by the ash borer -- a seemingly modest drop that carries significant implications considering that there are more than 320,000 Chicago schoolkids.“We found that schools with more low-income students were less likely to experience infestations because these neighborhoods have less tree cover,” Garcia said. “But the low-income students at wealthier schools, where infestations were more common, seemed to bear the brunt of the impacts.”The loss of tree cover could affect student performance by increasing heat on city streets, contributing to air pollution, and robbing kids of the psychological benefits of greenery, researchers speculated.“Some possible explanations are just that those students don't have the same resources to go home and recover from, for example, extreme temperatures or pollution-induced headaches the same way that higher-income students at the same schools might have,” Garcia said.Efforts to maintain and restore urban tree cover could play a vital role in boosting kids’ education, particularly in poorer neighborhoods, Garcia concluded.“It’s not just about access to environmental amenities,” Garcia said. “It’s about understanding how their absence can create inequities that ripple through critical aspects of life, like education.”SOURCE: University of Utah, news release, Dec. 17, 2024Copyright © 2025 HealthDay. All rights reserved.

Belgium becomes first EU country to ban sale of disposable vapes

Products banned on health and environmental grounds, while Milan outlaws outdoor smoking Belgium has become the EU first country to ban the sale of disposable vapes in an effort to stop young people from becoming addicted to nicotine and to protect the environment.The sale of disposable electronic cigarettes is banned in Belgium on health and environmental grounds from 1 January. A ban on outdoor smoking in Milan came into force on the same day, as EU countries discuss tighter controls on tobacco. Continue reading...

Belgium has become the first country in the EU to ban the sale of disposable vapes, in an effort to stop young people from becoming addicted to nicotine and to protect the environment.From 1 January, the sale of disposable electronic cigarettes is banned in Belgium on health and environmental grounds. On the same day, a ban on outdoor smoking in Milan came into force, as EU countries discuss tighter controls on tobacco.Announcing the ban last year, Belgium’s health minister, Frank Vandenbroucke, described electronic cigarettes as an “extremely harmful” product that damages society and the environment.“Disposable e-cigarettes is a new product simply designed to attract new consumers,” he told the Associated Press. “E-cigarettes often contain nicotine. Nicotine makes you addicted to nicotine. Nicotine is bad for your health.”The minister also cited the “hazardous waste chemicals” present in the cheap and widely available disposable vapes.Last year, Australia restricted the sale of all vapes to pharmacies as part of a series of anti-smoking measures described as world-leading. In the UK it will be illegal to sell single-use vapes from June 2025 in a move designed to combat their widespread use by children and prevent environmental damage.Vandenbroucke said Belgium was “playing a pioneering role in Europe to weaken the tobacco lobby” and called for an update of EU law.Belgium is seeking to reduce the number of new smokers to zero or near zero by 2040 and is taking other steps to “discourage and denormalise” smoking.Smoking in Belguim is now banned in playgrounds, sports fields, zoos and theme parks. From 1 April, tobacco products cannot be sold in supermarkets larger than 400 sq metres, or displayed at points of sale.An official Belgian Health Interview survey in 2018 found that 15.3% of the population aged 15 and over smoked every day, down from 25.5% in 1997. The 2023 survey, due to be released in September, is expected to show a further decline in smoking, but the government said further action was needed to meet its tobacco-reduction targets.Meanwhile, a ban on outdoor smoking in Milan, the northern Italian business and fashion hub long known for its smog, came into force on Wednesday.Smokers who light up on the city’s streets and in crowded public spaces will face fines of between €40 and €240. The ban is an extension of a measure imposed in 2021 which prohibited smoking in parks and playgrounds, as well as at bus stops and sports facilities.skip past newsletter promotionSign up to This is EuropeThe most pressing stories and debates for Europeans – from identity to economics to the environmentPrivacy Notice: Newsletters may contain info about charities, online ads, and content funded by outside parties. For more information see our Privacy Policy. We use Google reCaptcha to protect our website and the Google Privacy Policy and Terms of Service apply.after newsletter promotionThe city’s officials said the ban was aimed at improving air quality and protecting health, especially against the effects of passive smoking. The ban, however, does not apply to e-cigarettes.Milan is located in the Po Valley, a huge geographical area straddling the regions of Piedmont, Lombardy, Veneto and Emilia-Romagna. A Guardian investigation in 2023 found more than a third of the people living in the valley and surrounding areas breathed air four times above the World Health Organization’s guideline limit for the most dangerous airborne particulates.Although the number of smokers in Italy has gradually fallen over the past 15 years, still one in four people, or 24%, are smokers, according to data last year from the Higher Health Institute.An estimated 93,000 deaths each year in Italy are attributed to smoking, according to the health ministry. Italy’s first national anti-smoking measure was introduced in 1975, when smoking was banned on public transport and in classrooms. The ban was extended in 1995 to include public administration areas, and in 2005 smoking was banned in all enclosed public areas.

Air Quality, Not Just Fitness Level, Impacts Marathoners' Finish Times

By Dennis Thompson HealthDay ReporterTHURSDAY, Dec. 26, 2024 (HealthDay News) -- Runners put a lot of thought into how much they must eat and drink...

By Dennis Thompson HealthDay ReporterTHURSDAY, Dec. 26, 2024 (HealthDay News) -- Runners put a lot of thought into how much they must eat and drink to endure a 26.2-mile marathon, properly fueling their bodies to sustain a record-setting pace.But the quality of the air they huff and puff during endurance events could also play a key role in their performance, a new study says.Higher levels of air pollution are associated with slower average marathon finish times, according to findings published recently in the journal Sports Medicine.“Runners at that level are thinking about their gear, their nutrition, their training, the course, even the weather,” lead researcher Elvira Fleury, a doctoral student at Harvard University, said in a news release. “Our results show that those interested in optimizing athletic performance should consider the effect of air pollution, as well.”Runners’ average finish times on a marathon steadily decreased for every increase in particle pollution of one microgram per cubic meter of air, results show.Men finished 32 seconds slower on average for every increased unit of air pollution, and women finished 25 seconds slower, researchers found.These effects also appeared to be more pronounced in faster-than-average runners, researchers said.“This means that air pollution can be a health risk not just for those who are elderly or susceptible — it can negatively affect even the most healthy and well-trained among us,” senior researcher Joseph Braun, a professor of epidemiology at Brown University, said in a news release from the college.For the study, researchers analyzed data from U.S. public marathons conducted between 2003 and 2019, involving more than 1.5 million male runners and more than 1 million female runners.The research team compared the runners’ finishing times with air quality data captured on event days, including the amount of particle pollution in the air along different points of the marathon route.“This really sophisticated spatial-temporal model of particulate matter allowed us to plot pollution at every mile of every course,” Fleury said. “Without a model like this, it wouldn't have been possible to look at so many different marathons in different states across different years.”Researchers specifically looked at levels of fine particle pollution, which are airborne particles smaller than the width of a human hair or grain of fine beach sand, according to the Environmental Protection Agency.These airborne particles are typically generated by fossil fuels burned by cars and power plants, although in recent years, wildfires have contributed to such pollution.Previous studies have shown that particle air pollution is associated with overall risk of death, as well as risk of heart disease, breathing problems and lung cancer, researchers said.Air pollution could be harming marathon runners’ performance by causing increases in blood pressure, constricted blood vessels, impaired lung function, and perhaps even short-term changes in brain function, researchers speculated.“People who can complete a marathon are generally quite healthy, and we can assume they have honed their cardiorespiratory fitness,” Braun said.“This study revealed a negative impact from air pollution, even at levels below current health-based standards, on these very healthy people,” Braun continued.These findings support efforts to reduce pollution emissions by shifting motor vehicles and power plants away from fossil fuels, researchers concluded.SOURCE: Sports Medicine, journal study, Dec. 18; Brown University, news release, Dec. 18, 2024Copyright © 2024 HealthDay. All rights reserved.

Forty Years After the Bhopal Disaster, the Danger Still Remains

In many ways, we all live in Bhopal now. We must continue to fight for a future in which we all have the right to live in healthy environments.

Forty years ago this month, a Union Carbide pesticide factory in Bhopal, India, sprung a toxic gas leak, exposing half a million people to toxic fumes. Thousands of people lost their lives in the immediate aftermath, with the death toll climbing to more than 20,000 over the next two decades. Countless others, including children of survivors, continue to endure chronic health issues. In the United States, the events in Bhopal ignited a grassroots movement to expose and address the toxic chemicals in our water, air, and neighborhoods. In 1986, just two years after the disaster, this growing awareness led Congress to pass the first National Right to Know Act, which requires companies to publicly disclose their use of many toxic chemicals. In India, Bhopal victims have had a long struggle for justice. In 1989, survivors flew to a Union Carbide shareholders meeting in Houston to protest the inadequate compensation for the trauma they’d suffered. The settlement awarded each Bhopal victim was a mere $500—which a spokesperson for Dow Chemical, Union Carbide’s parent company, called “plenty good for an Indian.”  Union Carbide had the survivors arrested before they could enter the meeting. Meanwhile, their abandoned chemical factory was still leaking toxic chemicals into the surrounding neighborhoods and drinking water.  Nevertheless, Bhopal survivors never stopped fighting. They opened a free clinic to treat the intergenerational health effects caused by the disaster. They marched 500 miles between Bhopal and New Delhi. They staged hunger strikes. They created memorials to the disaster and established a museum to ensure that the horrors of their collective past are not forgotten.    The survivors even obtained an extradition order for Union Carbide’s former CEO, Warren Anderson, but the U.S. government never acted on that request. Forty years later, the factory in Bhopal has never been properly cleaned and is still leaking poison.  Unfortunately, the kinds of chemicals that flow through the veins of Bhopal survivors also flow through ours. The petrochemical industry has brought us together in a perverse solidarity, having chemically trespassed into places all over the world. According to one figure, Americans are exposed to dangerous chemical fires, leaks, and explosions about once every two days. In one dramatic example in early 2023, a rail tanker filled with vinyl chloride derailed in East Palestine, Ohio, forcing the evacuation of 2,000 residents.  Nearly all Americans now carry toxic substances known as PFAS in our bodies. These have been linked to cancer, liver and kidney disease, and immune dysfunction. And the continued burning of fossil fuels is killing millions of people each year around the world through air pollution.  Petrochemical and fossil fuel companies know they can only survive if they avoid liability for the damage they are doing to our health and the planet’s ecosystems. That’s why they are heavily invested in lobbying to prevent any such accountability. Polluting industries are certain to have strong allies in the coming Trump Administration, which plans to open even more land to fossil fuel production and, under the blueprint for conservative governance known as Project 2025, to slash environmental and public health regulations. But we can take inspiration from the people of Bhopal, whose fierce commitment to health and justice sparked a global movement. Earlier this month, on the fortieth anniversary of the Bhopal disaster, congressional allies of this movement including U.S. Senator Jeff Merkley, Democrat of Oregon, and U.S. Representatives Pramila Jayapal, Democrat of Washington, and Rashida Tlaib, Democrat of Michigan, introduced a resolution designating December 3 as National Chemical Disaster Awareness Day. “Chemical disasters are often the result of corporations cutting corners and prioritizing profits over safety,” said Merkley, who chairs the U.S. Senate Environment and Public Works subcommittee. “These catastrophes cloud communities with toxic fumes, upending lives and threatening the health and property of those living and working close by.” He called for “stronger laws to prevent chemical disasters and keep our communities and workers safe.” This growing global alliance, which has been called the largest movement for environmental health and justice in history, is fighting for a future in which everyone has the right to live in a healthy environment. It’s a movement that unites us all. Because in many ways, we all live in Bhopal now. This column was produced for Progressive Perspectives, a project of The Progressive magazine, and distributed by Tribune News Service. Gary Cohen is the president of Health Care Without Harm and a long time member of the International Campaign for Justice in Bhopal. Read more by Gary Cohen December 18, 2024 3:25 PM

Study Miscalculation Has Everyone Talking about Black Plastic Spatulas Again. Experts Are Still Concerned

The scientists behind a popular study on the health effects of flame retardants in black plastic cooking utensils and toys made a calculation error but still say their revised findings are alarming

Should you throw out your black plastic spatula? A recent study that reported alarming levels of several flame retardants in common black-colored plastic items (including cooking utensils, toys and hair products) had many people suddenly taking stock of their inky array of plastic kitchenware and considering wood or metal alternatives. And the reasons for the concern were understandable: the study’s findings, published in Chemosphere, highlighted potential health effects from exposure to the flame retardants, particularly decabromodiphenyl ether (decaBDE)—a chemical the U.S. Environmental Protection Agency banned in 2021 for its apparent links to cancer and reproductive, developmental and immunologic toxicity effects.But this week the study’s authors issued a correction that suggests exposure to decaBDE from the tested products isn’t as close to the EPA’s safety reference level as they initially thought. The decaBDE exposure they estimated from the screened products is still correct, but it’s one tenth of the reference dose. The study had miscalculated the comparison by an order of magnitude.The amount of flame retardants in such products is “not as harmful, with respect to the EPA guidance, as [the researchers] originally stated, although, with these chemicals, they may be harmful when you’re exposed to small amounts over a long period of time,” says Andrew Turner, a biogeochemist at the University of Plymouth in England, who wasn’t involved in the research and studies the disposal and recycling of plastic consumer goods. “It’s difficult to put numbers on these chemicals.”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.The study authors issued an apology for the mistake in which they maintained that the “calculation error does not affect the overall conclusion of the paper.”“Our results still show that when toxic additives are used in plastic, they can significantly contaminate products made with recycled content that do not require flame retardancy,” says Megan Liu, a co-author of the recent study and science and policy manager at Toxic-Free Future, an environmental health research and advocacy group. “The products found in this study to contain hazardous flame retardants included items with high exposure potential, such as things that touch our food, as well as toys, which come in contact with kids.”Why might some black plastics contain flame retardants? Flame retardants are required in certain products (often including computers, TVs and other common electronic items) to meet fire safety regulations. To reduce the amount of e-waste and fossil fuels needed to make new plastics, some of these items are recycled into black plastics. But the problem is that “you could also recycle the flame retardants and other chemicals that are associated with that plastic,” says Stuart Harrad, an environmental chemist at the University of Birmingham in England, who wasn’t involved in the paper. “Now that’s fine to some degree, I suppose, if you’re only recycling the plastic into uses like TV sets, where you need to meet fire safety regulations. But the point is here is that that isn’t happening.”The new study’s main goal was to identify any flame retardant chemicals in various common products. The researchers screened 203 items, ranging from plastic sushi take-out trays to toy necklaces—and found 17 of them were contaminated with high levels of flame retardants. Fourteen of those products contained high levels of decaBDE.The U.S. has largely banned decaBDE and other polybrominated-diphenyl-ether-based flame retardants. New electronic goods use safer flame retardants, but older electronics that contain decaBDE could still be in many households or might have been only recently tossed out for recycling, Turner says. “When you talk about some electronic devices, they last quite a long time,” he adds. These older devices might only be reaching recycling plants now.The new study’s findings generally line up with past evidence that recycled plastics—and flame retardants—can end up in toys and cooking utensils, Harrad says. But it’s been unclear whether the mere presence of flame retardants in a cooking utensil pose any health threat to humans; there are many contributing factors, including the source, the dose, the duration of exposure and any other chemicals that may be present. In a 2018 study Harrad and his colleagues tested potential exposure from black plastic cooking utensils and found that uptake through the skin from simply holding them was negligible. But when they tested them in prolonged cooking experiments with hot oil, about 20 percent of the flame retardants in a utensil transferred into the oil on average. “That’s really because the oil, particularly hot oil, is going to be a pretty good way of extracting these chemicals,” Harrad says.How did the miscalculation occur?The authors of the new study estimated humans’ potential exposure to decaBDE from the plastic products by using the calculation in Harrad’s 2018 study. They applied this calculation to the median levels of decaBDE detected in the products they tested. This wound up being an estimated 34,700 nanograms per day of decaBDE. They then compared that figure with the EPA’s reference dose of 7,000 nanograms per kilogram of body weight per day. (Some researchers note that this measurement was derived from lab tests and animal models, not direct human testing). To better assess human risk, the scientists calculated a reference dose based on a 60-kg (132-pound) person and initially found 42,000 ng per day, a value alarmingly close to the 34,700 ng per day of exposure they estimated from the new data. But 7,000 multiplied by 60 is actually 420,000. This may have been a simple math error, but the correction massively reduces how close the amount of exposure is to the maximum acceptable limit.The figure with the miscalculation was “contextualizing the levels that we saw in our study, thinking that it could be helpful for people,” Liu says. “This was really just one part of our study that isn’t even part of our key findings.”She and her co-authors have emphasized that the error shouldn’t detract from one of the study’s main conclusions: that none of these flame-retardant chemicals, especially those that have been banned, should be found, in any amount, in these products in the first place.“They're probably banging their head in frustration when they found out they made that calculation error,” Harrad says, adding that the rest of their findings “were perfectly plausible.”“The study does highlight the fact that we’ve not sorted this out yet—that we’re still finding these chemicals coming through into new goods that contain recycled plastics,” Harrad says. “We do need to step up our efforts to isolate these chemicals from waste and make sure that they don't get recycled.”So should you really ditch your black plastic spatula? Harrad says you should avoid leaving it in a hot pan or pot for long periods of time. Some experts don’t recommend reheating food in black plastic containers, although studies haven’t confirmed if this causes chemicals to leach into food. Importantly, “if you see that your black utensil is damaged in any way, just [get rid of it] and go for something else,” Turner says—pieces of the plastic could potentially break off into food.When looking for new cooking ware, Turner says that it’d be more sustainable, and potentially safer, to reduce the use of black plastic items and opt for a material or color that’s more easily recyclable. Liu says wood, stainless steel or silicone products are some safer alternatives. She adds, however, that people can’t “shop” their way out of a larger societal issue. “We can’t expect that everyone can immediately switch over to safer alternatives,” Liu says. “That’s ultimately why we’ve been calling on greater regulatory action at both the corporate and government level to regulate and restrict these harmful chemicals.”

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