Cookies help us run our site more efficiently.

By clicking “Accept”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. View our Privacy Policy for more information or to customize your cookie preferences.

A 'calamity waiting to unfold': Altadena residents with standing homes fear long-term health effects

News Feed
Wednesday, April 16, 2025

On Jan. 7, two residents on opposite sides of Altadena — Francois Tissot, a Caltech professor who studies the geology of ancient Earth and our solar system, living in the east side of town; and Jane Potelle, an environmental advocate living in the west side — fled the intensifying red glow of the devastating Eaton fire.The inferno devoured home after home, unleashing what experts estimate to be tons of dangerous metals and compounds, from lead to asbestos to the carcinogen benzene. Carried through the vicious winds, the toxins embedded deep into the soil, seeped into the blood of first responders, and leaked into structures in the area that hadn’t burned down.Within weeks, Altadena residents whose homes had withstood the fire began to return — yet few were testing for contaminants both Tissot and Potelle knew were almost certainly sitting in their still-standing houses.Working independently, they both decided to create a comprehensive picture of the contamination lurking within surviving homes, both in the burn area and miles outside it.They came to similar results: In the houses inside the burn zone, there was lead — a metal capable of dealing irreversible damage to the brain and nervous system — at levels far exceeding 100 times the Environmental Protection Agency’s allowable limits. Tissot’s group also found lead levels exceeding the limit over five miles from the fire’s perimeter.“Children exposed to lead will have diminished cognitive development,” said Tissot, referencing studies that found exposure to leaded gasoline in though the 1990s was correlated with a drop in children’s IQ (an imperfect but useful metric for reasoning ability) by up to seven points. “To me, what’s at stake is the future of a generation of zero- to 3-year-olds,” Tissot said. “If nothing is done, then these children will be exposed. But it’s totally avoidable.” Activists and community leaders, along with residents who were force to evacuate when the Eaton fire swept through the city of Altadena, gather at an apartment complex where several residents are living with little to no utilities. (Jason Armond/Los Angeles Times) Potelle, frustrated with the lack of government response to contamination concerns, started a grassroots organization with other Altadena residents with standing homes to collect and publish tests conducted by certified specialists.The organization, Eaton Fire Residents United, or EFRU, found lead in every single one of the 90 homes for which they’ve collected test results. Of those, 76% were above the EPA limits.EFRU and Tissot’s team were distressed by these data, particularly seeing debris-removal and remediation contractors work without masks in the burn area and some residents even begin to return home.In early April, Anita Ghazarian, co-lead of EFRU’s political advocacy team, went back to her standing home within the burn zone to pick up mail. She watched as a grandmother pushed a toddler in a stroller down the street.“She has no idea … this area is toxic,” Ghazarian recalled thinking. The gravity of the situation sunk in. “To me, it’s just — unfortunately — a calamity waiting to unfold.”Evidence mounted in the 1950s that even small amounts of lead exposure could harm children’s brains. But by the time the U.S. banned lead in paint in 1978, roughly 96% of the homes in Altadena that burned in the Eaton fire were already built. In the Palisades, that number was 78% — smaller, but still significant. Jared Franz looks at the state of his kitchen, which survived the Eaton Fire, but is inhabitable due to smoke damage. (William Liang/For The Times) (William Liang/For The Times) After the Eaton fire, Tissot did a quick back-of-the-envelope calculation to understand what his Altadena community might be dealing with: roughly 7,000 homes burnt with 100 liters of paint per house and 0.5% of that paint likely made of lead.“That’s something like several tons of lead that have been released by the fire, and it’s been deposited where the fire plume went,” he said.As the Eaton fire roared in the foothills of the Angeles National Forest the night of Jan. 7, Tissot fled with his two kids, along with the rest of east Altadena. Meanwhile, Potelle sat awake in her living room on the west side of town, listening to the howling winds as the rest of her family slept.When Potelle got the evacuation order on her phone around 3:30 a.m. Jan. 8, her family joined the exodus. As they raced to gather their belongings, Potelle grabbed protective goggles she had bought for her son’s upcoming Nerf-battle birthday party.Even with them, the soot, smoke and ash made it impossible to see.The family made it to a friend’s house in Glendale, but as the toxic smoke plume swelled, Potelle had to evacuate yet again, this time to a friend’s garage. Tissot, then in Eagle Rock, left for Santa Barbara the next day as the smoke’s incursion progressed southwest.As Altadena turned into a ghost town on Jan. 9, some residents — including Potelle’s husband — crept back in to assess the damage. Potelle waited for her husband’s report and watched on social media from the safety of the garage.“People are just videotaping themselves driving through Altadena, and it’s block after block after block of burnt-down homes. The reality of it started to strike me,” Potelle said. “This is not just carbon. This is like, refrigerators and dishwashers and laundry machines and dryers and cars.” Fires like these, with smoke made of car batteries, paints, insulation and appliances — and not trees and shrubs — are becoming increasingly common in California. These fuels can contain a litany of toxic substances like lead and arsenic that are not present in vegetation, waiting to be unlocked by flame.Potelle’s home sustained visible smoke damage. So, she made two trips to a disaster support center set up temporarily at Pasadena City College, hoping to get support from her insurance company and the government for soil and in-home contamination testing.Officials directed Potelle back and forth between her insurance company, FEMA, the L.A. County Department of Public Health, and the California Department of Insurance. Potelle — who, at this point, had already started to develop a cough and chest pain, which she suspects came from her visits to the burn area — left with without clear answers, feeling dejected.“I’m driving, going back to my friend’s garage … and I’m just realizing there’s no one looking out for us,” she said.Potelle set out to find the answers herself.“Here’s the thing, if you don’t know what’s in your home when you remediate, you could just be pushing those contaminants deeper into your walls, deeper into your personal items,” Potelle said.Tissot, meanwhile, visited his home a week after the fires to find the windows exploded, melted or warped; the walls cracked; and ash and soot everywhere. He too decided that he ought to do his own testing for contamination.In his day job, Tissot runs a lab with sophisticated machinery able to discern what metals are present in samples of material, usually comprised of rock and dirt, based on their atomic mass: Only lead has an atomic mass of 0.34 trillion billionths of a gram. He normally uses the machine to study rare elements and isotopes from space and eons ago.He gathered his lab team together on the Caltech campus to use the equipment to test samples from their own backyard.The team took 100 samples from windowsills, desks and stairwells in the Caltech geology and planetary science buildings. They then cleaned the surfaces and resampled.The team found multiple surfaces with lead levels above the EPA’s limits on the initial sample. And while cleaning the surface removed about 90% of the lead, some still exceeded the limits on the second sample.Tissot quickly set up a webinar to announce the findings. The chat exploded with requests from homeowners in Altadena asking Tissot to test their houses.Around the same time, Potelle noticed some folks on Facebook sharing the results of in-home contamination testing — which in many cases, they had paid for out of pocket. Inspired, she advertised a Zoom meeting to discuss a strategy for mapping the test results. Sixty residents showed up; Potelle coordinated the group so that residents could submit results to EFRU’s Data Unification team for analysis.Meanwhile, Tissot connected with residents who messaged him to set up a testing campaign. The researchers donned full hazmat suits in early February and entered the burn area to test homes and meet with homeowners.ERFU posted its first dataset of 53 homes on March 24. Tissot’s group announced their results, which included data from 52 homes, just a week later, confirming what many had feared: There was lead everywhere.“What was surprising to me is how far it went,” said Tissot. “We got very high levels of lead even miles away from the fire, and what’s difficult is that we still can’t really answer a simple question: How far is far enough to be safe?”The two groups hope their data can help homeowners make better-informed decisions about their remediation and health — and apply pressure on leaders to take more action. Tissot wants to see the government update its guidebooks and policy on fire recovery to reflect the contamination risks for intense urban fires, and to require testing companies to report their results to a public database.Nicole Maccalla, a core member of EFRU’s Data Unification team, hopes to see officials enforce a common standard for insurance claims for testing and remediation so every resident doesn’t have to go through the same exact fight.“You’ve got people stepping up to fill the void,” she said. “There should be an organized, systematic approach to this stuff, but it’s not happening.”

Two Altadena residents set out to collect testing data for toxic contaminants within the Eaton burn area's standing homes. They found lead everywhere.

On Jan. 7, two residents on opposite sides of Altadena — Francois Tissot, a Caltech professor who studies the geology of ancient Earth and our solar system, living in the east side of town; and Jane Potelle, an environmental advocate living in the west side — fled the intensifying red glow of the devastating Eaton fire.

The inferno devoured home after home, unleashing what experts estimate to be tons of dangerous metals and compounds, from lead to asbestos to the carcinogen benzene. Carried through the vicious winds, the toxins embedded deep into the soil, seeped into the blood of first responders, and leaked into structures in the area that hadn’t burned down.

Within weeks, Altadena residents whose homes had withstood the fire began to return — yet few were testing for contaminants both Tissot and Potelle knew were almost certainly sitting in their still-standing houses.

Working independently, they both decided to create a comprehensive picture of the contamination lurking within surviving homes, both in the burn area and miles outside it.

They came to similar results: In the houses inside the burn zone, there was lead — a metal capable of dealing irreversible damage to the brain and nervous system — at levels far exceeding 100 times the Environmental Protection Agency’s allowable limits. Tissot’s group also found lead levels exceeding the limit over five miles from the fire’s perimeter.

“Children exposed to lead will have diminished cognitive development,” said Tissot, referencing studies that found exposure to leaded gasoline in though the 1990s was correlated with a drop in children’s IQ (an imperfect but useful metric for reasoning ability) by up to seven points.

“To me, what’s at stake is the future of a generation of zero- to 3-year-olds,” Tissot said. “If nothing is done, then these children will be exposed. But it’s totally avoidable.”

A pile of furniture on the outside of an apartment complex.

Activists and community leaders, along with residents who were force to evacuate when the Eaton fire swept through the city of Altadena, gather at an apartment complex where several residents are living with little to no utilities.

(Jason Armond/Los Angeles Times)

Potelle, frustrated with the lack of government response to contamination concerns, started a grassroots organization with other Altadena residents with standing homes to collect and publish tests conducted by certified specialists.

The organization, Eaton Fire Residents United, or EFRU, found lead in every single one of the 90 homes for which they’ve collected test results. Of those, 76% were above the EPA limits.

EFRU and Tissot’s team were distressed by these data, particularly seeing debris-removal and remediation contractors work without masks in the burn area and some residents even begin to return home.

In early April, Anita Ghazarian, co-lead of EFRU’s political advocacy team, went back to her standing home within the burn zone to pick up mail. She watched as a grandmother pushed a toddler in a stroller down the street.

“She has no idea … this area is toxic,” Ghazarian recalled thinking. The gravity of the situation sunk in. “To me, it’s just — unfortunately — a calamity waiting to unfold.”

Evidence mounted in the 1950s that even small amounts of lead exposure could harm children’s brains. But by the time the U.S. banned lead in paint in 1978, roughly 96% of the homes in Altadena that burned in the Eaton fire were already built. In the Palisades, that number was 78% — smaller, but still significant.

Jared Franz looks at the state of his kitchen.

Jared Franz looks at the state of his kitchen, which survived the Eaton Fire, but is inhabitable due to smoke damage.

(William Liang/For The Times)

Dust from the fire inside the Franz family's home.

(William Liang/For The Times)

After the Eaton fire, Tissot did a quick back-of-the-envelope calculation to understand what his Altadena community might be dealing with: roughly 7,000 homes burnt with 100 liters of paint per house and 0.5% of that paint likely made of lead.

“That’s something like several tons of lead that have been released by the fire, and it’s been deposited where the fire plume went,” he said.

As the Eaton fire roared in the foothills of the Angeles National Forest the night of Jan. 7, Tissot fled with his two kids, along with the rest of east Altadena.

Meanwhile, Potelle sat awake in her living room on the west side of town, listening to the howling winds as the rest of her family slept.

When Potelle got the evacuation order on her phone around 3:30 a.m. Jan. 8, her family joined the exodus. As they raced to gather their belongings, Potelle grabbed protective goggles she had bought for her son’s upcoming Nerf-battle birthday party.

Even with them, the soot, smoke and ash made it impossible to see.

The family made it to a friend’s house in Glendale, but as the toxic smoke plume swelled, Potelle had to evacuate yet again, this time to a friend’s garage. Tissot, then in Eagle Rock, left for Santa Barbara the next day as the smoke’s incursion progressed southwest.

As Altadena turned into a ghost town on Jan. 9, some residents — including Potelle’s husband — crept back in to assess the damage. Potelle waited for her husband’s report and watched on social media from the safety of the garage.

“People are just videotaping themselves driving through Altadena, and it’s block after block after block of burnt-down homes. The reality of it started to strike me,” Potelle said. “This is not just carbon. This is like, refrigerators and dishwashers and laundry machines and dryers and cars.”

Fires like these, with smoke made of car batteries, paints, insulation and appliances — and not trees and shrubs — are becoming increasingly common in California. These fuels can contain a litany of toxic substances like lead and arsenic that are not present in vegetation, waiting to be unlocked by flame.

Potelle’s home sustained visible smoke damage. So, she made two trips to a disaster support center set up temporarily at Pasadena City College, hoping to get support from her insurance company and the government for soil and in-home contamination testing.

Officials directed Potelle back and forth between her insurance company, FEMA, the L.A. County Department of Public Health, and the California Department of Insurance. Potelle — who, at this point, had already started to develop a cough and chest pain, which she suspects came from her visits to the burn area — left with without clear answers, feeling dejected.

“I’m driving, going back to my friend’s garage … and I’m just realizing there’s no one looking out for us,” she said.

Potelle set out to find the answers herself.

“Here’s the thing, if you don’t know what’s in your home when you remediate, you could just be pushing those contaminants deeper into your walls, deeper into your personal items,” Potelle said.

Tissot, meanwhile, visited his home a week after the fires to find the windows exploded, melted or warped; the walls cracked; and ash and soot everywhere. He too decided that he ought to do his own testing for contamination.

In his day job, Tissot runs a lab with sophisticated machinery able to discern what metals are present in samples of material, usually comprised of rock and dirt, based on their atomic mass: Only lead has an atomic mass of 0.34 trillion billionths of a gram. He normally uses the machine to study rare elements and isotopes from space and eons ago.

He gathered his lab team together on the Caltech campus to use the equipment to test samples from their own backyard.

The team took 100 samples from windowsills, desks and stairwells in the Caltech geology and planetary science buildings. They then cleaned the surfaces and resampled.

The team found multiple surfaces with lead levels above the EPA’s limits on the initial sample. And while cleaning the surface removed about 90% of the lead, some still exceeded the limits on the second sample.

Tissot quickly set up a webinar to announce the findings. The chat exploded with requests from homeowners in Altadena asking Tissot to test their houses.

Around the same time, Potelle noticed some folks on Facebook sharing the results of in-home contamination testing — which in many cases, they had paid for out of pocket.

Inspired, she advertised a Zoom meeting to discuss a strategy for mapping the test results. Sixty residents showed up; Potelle coordinated the group so that residents could submit results to EFRU’s Data Unification team for analysis.

Meanwhile, Tissot connected with residents who messaged him to set up a testing campaign. The researchers donned full hazmat suits in early February and entered the burn area to test homes and meet with homeowners.

ERFU posted its first dataset of 53 homes on March 24. Tissot’s group announced their results, which included data from 52 homes, just a week later, confirming what many had feared: There was lead everywhere.

“What was surprising to me is how far it went,” said Tissot. “We got very high levels of lead even miles away from the fire, and what’s difficult is that we still can’t really answer a simple question: How far is far enough to be safe?”

The two groups hope their data can help homeowners make better-informed decisions about their remediation and health — and apply pressure on leaders to take more action.

Tissot wants to see the government update its guidebooks and policy on fire recovery to reflect the contamination risks for intense urban fires, and to require testing companies to report their results to a public database.

Nicole Maccalla, a core member of EFRU’s Data Unification team, hopes to see officials enforce a common standard for insurance claims for testing and remediation so every resident doesn’t have to go through the same exact fight.

“You’ve got people stepping up to fill the void,” she said. “There should be an organized, systematic approach to this stuff, but it’s not happening.”

Read the full story here.
Photos courtesy of

Living Near Polluted Missouri Creek as a Child Tied to Later Cancer Risk

By I. Edwards HealthDay ReporterTHURSDAY, July 17, 2025 (HealthDay News) — Folks who grew up near a polluted Missouri creek during the 1940s...

THURSDAY, July 17, 2025 (HealthDay News) — Folks who grew up near a polluted Missouri creek during the 1940s through 1960s may have higher odds for cancer now, new research shows.The study focused on Coldwater Creek in St. Louis County. The area was contaminated with radioactive waste from the U.S. government’s atomic bomb program during World War II.Back then, uranium was processed in St. Louis and nuclear waste was stored near the city’s airport. That waste leaked into Coldwater Creek, which runs through several residential neighborhoods.Researchers found that people who lived within one kilometer (0.62 miles) of the creek as kids had an 85% higher risk of developing certain cancers later in life compared to those who lived more than 20 kilometers (12.4 miles) away.Those cancers include leukemia, thyroid cancer and breast cancer, which are known to be linked to radiation exposure.“The closer the childhood residence got to Coldwater Creek, the risk of cancer went up, and pretty dramatically," lead researcher Marc Weisskopf, a professor of epidemiology at Harvard T.H. Chan School of Public Health, told The Wall Street Journal.For the study, Weisskopf’s team surveyed more than 4,200 adults who lived in the St. Louis area as children between 1958 and 1970.These people had donated their baby teeth years ago for radiation research. The new survey asked about cancer and other health issues.About 1 in 4 participants said they had been diagnosed with cancer. Risk dropped the farther someone lived from the creek as a child.Outside experts who reviewed the findings described them as concerning.“It emphasizes the importance of appreciating that radioactive waste is carcinogenic, particularly to children, and that we have to ensure that we have to clean up any remaining waste that’s out there,” Dr. Rebecca Smith-Bindman, a radiation risk expert at the University of California, San Francisco, told The Journal.In 2024, the U.S. Army Corps of Engineers began placing warning signs along parts of the creek that still have radioactive waste, The Journal reported.The U.S. Agency for Toxic Substances and Disease Registry reported in 2019 that contamination have raised the risk of leukemia and lung and bone cancer. Later exposures, starting in the 2000s, were linked to a slight increase in lung cancer for those who lived nearby.But the agency said it’s hard to link any one person’s cancer directly to radiation. Genetics, lifestyle and other factors could also play a role.In this study, radiation exposure wasn’t directly measured. Cancer cases were also self-reported, not confirmed by medical records. Weisskopf plans to measure radiation levels using the stored baby teeth in future research.Radiation exposure has long been tied to cancer, but this study is among the first to look at lower, long-term environmental exposure in the U.S., not just high levels from nuclear disasters or bombings."Radiation, when it’s given unnecessarily, only causes risk," Dr. Howard Sandler, chair of radiation oncology at Cedars-Sinai in Los Angeles, told The Journal.SOURCE: The Wall Street Journal, July 16, 2025Copyright © 2025 HealthDay. All rights reserved.

Disposable Vapes Release Toxic Metals, Lab Study Says

By Dennis Thompson HealthDay ReporterFRIDAY, July 11, 2025 (HealthDay News) — People using cheap disposable vape devices are likely inhaling high...

By Dennis Thompson HealthDay ReporterFRIDAY, July 11, 2025 (HealthDay News) — People using cheap disposable vape devices are likely inhaling high levels of toxic metals with every puff, a recent study says.After a few hundred puffs, some disposable vapes start releasing levels of toxic metals higher than found in either last-generation refillable e-cigarettes or traditional tobacco smokes, researchers reported in the journal ACS Central Science.These metals can increase a person’s risk of cancer, lung disease and nerve damage, researchers said.“Our study highlights the hidden risk of these new and popular disposable electronic cigarettes — with hazardous levels of neurotoxic lead and carcinogenic nickel and antimony — which stresses the need for urgency in enforcement,” senior researcher Brett Poulin, an assistant professor of environmental toxicology at the University of California-Davis, said in a news release.Earlier studies found that the heating elements of refillable vapes could release metals like chromium and nickel into the vapor people breathe.For this study, researchers analyzed seven disposable devices from three well-known vape brands: ELF Bars, Flum Pebbles and Esco Bar.Before they were even used, some of the devices had surprisingly high levels of lead and antimony, researchers reported. The lead appears to have come from leaded copper alloys used in the devices, which leach into the e-liquid.The team then activated the disposable vapes, creating between 500 and 1,500 puffs for each device, to see whether their heating elements would release more metals.Analysis of the vapor revealed that:Levels of metals like chromium, nickel and antimony increased as the number of puffs increased, while concentrations of zinc, copper and lead were elevated at the start. Most of the tested disposables released higher amounts of metals than older refillable vapes. One disposable released more lead during a day’s use than one would get from nearly 20 packs of tobacco cigarettes. Nickel in three devices and antimony in two devices exceeded cancer risk limits. Four devices had nickel and lead emissions that surpassed health risk thresholds for diseases other than cancer. These results reflect only three of the nearly 100 disposable vape brands now available on store shelves, researchers noted.“Coupling the high element exposures and health risks associated with these devices and their prevalent use among the underage population, there is an urgent need for regulators to investigate this issue further and exercise regulatory enforcement accordingly,” researchers wrote.SOURCES: American Chemical Society, news release, June 20, 2025; ACS Central Science, June 25, 2025Copyright © 2025 HealthDay. All rights reserved.

Trying to Quit Smoking? These Expert-Backed Tips Can Help

By David Hill, MD, Chair, Board of Directors, American Lung Association HealthDay ReporterTHURSDAY, July 10, 2025 (HealthDay News) — According to...

THURSDAY, July 10, 2025 (HealthDay News) — According to the U.S. Centers for Disease Control and Prevention (CDC), in 2022, the majority of the 28.8 million U.S. adults who smoked cigarettes wanted to quit; approximately half had tried to quit, but fewer than 10% were successful.Many folks say quitting smoking was the hardest thing they have ever done. This includes people who have climbed mountains, corporate ladders, tackled childbirth and raised families.Successfully overcoming tobacco addiction is a process, and it takes time. It can’t be done at once. Individuals taught themselves how to smoke, vape or chew tobacco products and practiced for so long that the behavior became as automatic as breathing, eating or sleeping.Quitting, then, is a process of overcoming addiction and learned behaviors. Individuals must learn to manage nicotine addiction, unlearn their automatic behavior of tobacco use, and replace it with healthy new alternatives.Because tobacco dependence is a chronic relapsing condition, Freedom From Smoking® identifies quitting tobacco use and maintaining abstinence as a process in which a person may cycle through multiple periods of relapse and remission before experiencing long-term lifestyle and behavior change.The CDC suggests that it takes eight to 11 attempts before quitting permanently.It’s essential to understand three challenges associated with quitting and create a plan to address each with proven-effective strategies:1. Psychological Link of Nicotine Addiction Over time, using tobacco products becomes an automatic behavior that needs to be unlearned.  After quitting, emotions can overwhelm a person.  Grief can also play an important role in the quitting process.  Create support systems through counseling classes, and among family, friends and co-workers. Mark a calendar for every day you are tobacco-free and reward yourself for days you avoid use. Use positive self-talk when cravings arise, such as “the urge will pass whether I smoke or not” or “smoking is not an option for me.”2. Sociocultural Link of Nicotine AddictionCertain activities and environmental cues can trigger the urge to smoke. As people mature, social factors or cues play a role in continuing use.  People who use tobacco may be reluctant to give up those connections or routines.  Identify your triggers and use replacements such as cinnamon sticks, doodling on a notepad or finding another activity to keep your hands busy. Create change and break routine by using the 3 A’s — AVOID (the situation), ALTER (the situation) or ALTERNATIVE (substitute something else). Keep a quit kit/survival kit with you at all times with items you can use to replace tobacco product use when the urge comes.3. Biological (Physical) Link of Nicotine AddictionAddiction occurs when a substance — like nicotine, alcohol or cocaine — enters the brain and activates the brain’s receptors for that substance, producing pleasure.  When a person quits, the brain’s nicotine receptors activate, creating cravings and withdrawal symptoms.  Over time, the receptors become inactive, and the withdrawal symptoms and urges to use fade away. Use cessation medications approved by the U.S. Food and Drug Administration (prescription or over-the-counter) in the proper doses for the full time period recommended by a clinician. Do not stop treatment early. Exercise alternative ways to release dopamine such as physical activity or listening to music.  Use stress management techniques, including deep breathing and relaxation exercises, daily if possible.Nearly 2 in 3 adults who have ever smoked cigarettes have successfully quit, according to the CDC You can, too! To learn more about strategies for countering the challenges associated with the three-link chain of nicotine addiction, visit Quit Smoking & Vaping | American Lung Association.Dr. David Hill is a member of the Lung Association's National Board of Directors and is the immediate past chair of the Northeast Regional Board of the American Lung Association. He serves on the Leadership Board of the American Lung Association in Connecticut and is a former chair of that board. He is a practicing pulmonary and critical care physician with Waterbury Pulmonary Associates and serves as their director of clinical research. He is an assistant clinical professor of medicine at the Yale University School of Medicine, an assistant clinical professor at the Frank Netter School of Medicine at Quinnipiac University, and a clinical instructor at the University of Connecticut School of Medicine.Copyright © 2025 HealthDay. All rights reserved.

Lead Exposure Can Harm Kids' Memory, Study Says

By Dennis Thompson HealthDay ReporterTHURSDAY, July 10, 2025 (HealthDay News) — Even low levels of lead exposure can harm kids' working memory,...

By Dennis Thompson HealthDay ReporterTHURSDAY, July 10, 2025 (HealthDay News) — Even low levels of lead exposure can harm kids' working memory, potentially affecting their education and development, according to a new study.Exposure to lead in the womb or during early childhood appears to increase kids' risk of memory decay, accelerating the rate at which they forget information, researchers reported July 9 in the journal Science Advances.“There may be no more important a trait than the ability to form memories. Memories define who we are and how we learn,” said senior researcher Dr. Robert Wright, chair of environmental medicine at the Icahn School of Medicine at Mount Sinai in New York City.“This paper breaks new ground by showing how environmental chemicals can interfere with the rate of memory formation,” Wright said in a news release.For the study, researchers took blood lead measurements from the mothers of 576 children in Mexico during the second and third trimester of pregnancy. Later, the team took samples directly from the kids themselves, at ages 4 to 6.Between 6 and 8 years of age, the kids took a test called the delayed matching-to-sample task, or DMST, to measure their rate of forgetting.In the test, kids had to remember a simple shape for up to 32 seconds after it had been briefly shown to them, and then choose it from three offered options.The test lasted for 15 minutes, with correct responses rewarding the child with tokens that could be exchanged for a toy at the end of the experiment.“Children with higher levels of blood lead forgot the test stimulus faster than those with low blood lead levels,” Wright said.Researchers noted that the Mexican children in the study had higher median blood lead levels than those typically found in U.S. kids 6 to 10 years old – 1.7 Ug/dL versus 0.5 Ug/dL. (Median means half were higher, half were lower.)Children in Mexico are exposed to lead through commonly used lead-glazed ceramics used to cook, store and serve food, researchers said.However, the Mexican kids’ blood lead levels were still lower than the 3.5 Ug/dL level used by the U.S. Centers for Disease Control and Prevention to identify kids in the United States with more lead exposure than others, researchers added.“In the U.S., the reduction of environmental exposures to lead, such as lead-based paint in homes, lead pipes, and lead in foods such as spices, is still of continued importance as even low levels of lead can have detrimental effects on children’s cognitive function and development,” researchers wrote in their paper.This study also shows that the DMST test can be used to help test the effect of other environmental hazards on kids’ memory, researchers said.“Children are exposed to many environmental chemicals, and this model provides a validated method to further assess the effect of additional environmental exposures, such as heavy metals, air pollution, or endocrine disruptors, on children’s working memory,” co-lead researcher Katherine Svensson, a postdoctoral fellow in environmental medicine at the Icahn School of Medicine at Mount Sinai, said in a news release.SOURCES: Mount Sinai, news release, July 9, 2025; Science Advances, July 9, 2025Copyright © 2025 HealthDay. All rights reserved.

Nearly Half of Americans Still Live With High Levels of Air Pollution, Posing Serious Health Risks, Report Finds

The most recent State of the Air report by the American Lung Association found that more than 150 million Americans breathe air with unhealthy levels of ozone or particle pollution

Nearly Half of Americans Still Live With High Levels of Air Pollution, Posing Serious Health Risks, Report Finds The most recent State of the Air report by the American Lung Association found that more than 150 million Americans breathe air with unhealthy levels of ozone or particle pollution Lillian Ali - Staff Contributor April 25, 2025 12:50 p.m. For 25 of the 26 years the American Lung Association has reported State of the Air, Los Angeles—pictured here in smog—has been declared the city with the worst ozone pollution in the United States. David Iliff via Wikimedia Commons under CC BY-SA 3.0 Since 2000, the American Lung Association has released an annual State of the Air report analyzing air quality data across the United States. This year’s report, released on Wednesday, found the highest number of people exposed to unhealthy levels of air pollution in a decade. According to the findings, 156 million Americans—or 46 percent of the U.S. population—live with levels of particle or ozone pollution that received a failing grade. “Both these types of pollution cause people to die,” Mary Rice, a pulmonologist at Harvard University, tells NPR’s Alejandra Borunda. “They shorten life expectancy and drive increases in asthma rates.” Particle pollution, also called soot pollution, is made up of minuscule solid and liquid particles that hang in the air. They’re often emitted by fuel combustion, like diesel- and gasoline-powered cars or the burning of wood. Ozone pollution occurs when polluting gases are hit by sunlight, leading to a reaction that forms ozone smog. Breathing in ozone can irritate your lungs, causing shortness of breath, coughing or asthma attacks. The 2025 State of the Air report, which analyzed air quality data from 2021 to 2023, found 25 million more people breathing polluted air compared to the 2024 report. The authors link this rise to climate change. “There’s definitely a worsening trend that’s driven largely by climate change,” Katherine Pruitt, the lead author of the report and national senior director for policy at the American Lung Association, tells USA Today’s Ignacio Calderon. “Every year seems to be a bit hotter globally, resulting in more extreme weather events, more droughts, more extreme heat and more wildfires.” Those wildfires produce the sooty particles that contribute to particulate pollution, while extreme heat creates more favorable conditions for ozone formation, producing smog. While climate change is contributing to heavy air pollution, it used to be much worse. Smog has covered cities like Los Angeles since the early 20th century. At one point, these “hellish clouds” of smog were so thick that, in the middle of World War II, residents thought the city was under attack. The Optimist Club of Highland Park, a neighborhood in northeast Los Angleles, wore gas masks at a 1954 banquet to highlight air pollution in the city. Los Angeles Daily News via Wikimedia Commons under CC-BY 4.0 The passage of the Clean Air Act and the creation of the federal Environmental Protection Agency (EPA) in 1970 marked a turning point in air quality, empowering the government to regulate pollution and promote public health. Now, six key air pollutants have dropped by about 80 percent since the law’s passage, according to this year’s report. But some researchers see climate change as halting—or even reversing—this improvement. “Since the act passed, the air pollution has gone down overall,” Laura Kate Bender, an assistant vice president at the American Lung Association, tells CBS News’ Kiki Intarasuwan. “The challenge is that over the last few years, we’re starting to see it tick back up again, and that’s because of climate change, in part.” At the same time, federal action against climate change appears to be slowing. On March 12, EPA administrator Lee Zeldin announced significant rollbacks and re-evaluations, declaring it “the greatest day of deregulation our nation has seen.” Zeldin argued that his deregulation will drive “a dagger straight into the heart of the climate change religion.” Included in Zeldin’s push for deregulation is a re-evaluation of Biden-era air quality standards, including those for particulate pollution and greenhouse gases. The EPA provided a list of 31 regulations it plans to scale back or eliminate, including limits on air pollution, mercury emissions and vehicles. This week, the EPA sent termination notices to nearly 200 employees at the Office of Environmental Justice and External Civil Rights. “Unfortunately, we see that everything that makes our air quality better is at risk,” Kate Bender tells CBS News, citing the regulation rollbacks and cuts to staff and funding at the EPA. “If we see all those cuts become reality, it’s gonna have a real impact on people’s health by making the air they breathe dirtier.” Get the latest stories in your inbox every weekday.

Suggested Viewing

Join us to forge
a sustainable future

Our team is always growing.
Become a partner, volunteer, sponsor, or intern today.
Let us know how you would like to get involved!

CONTACT US

sign up for our mailing list to stay informed on the latest films and environmental headlines.

Subscribers receive a free day pass for streaming Cinema Verde.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.