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Could a CA bill on tortillas improve maternal health?

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Monday, April 15, 2024

A premature baby in incubator. Photo via iStock California is struggling to provide maternal health for its residents. But as one proposal aims to prevent birth defects, another has received hateful pushback that’s been condemned by both political parties. As CalMatters health reporter Ana B. Ibarra writes, Assemblymember Joaquin Arambula has introduced a bill that would require corn masa flour makers to add 0.7 milligrams of folic acid per pound of flour. Though federal law requires other grain products, such as cereals, breads and pasta, be fortified with folic acid, corn masa flour is not included. The corn flour is a key ingredient used in many classic Latino foods. Arambula, a Fresno Democrat and physician, to CalMatters: “Food is the best way that we can get folic acid into our communities before they’re pregnant. Oftentimes the prenatal vitamins that we give to pregnant people are too late.”  Research has shown that folic acid, which can be found in prenatal and women’s multi-vitamins, promotes healthy cell growth, and can prevent birth defects when taken before and during the early weeks of pregnancy. Since 1998, when the U.S. Food and Drug Administration handed down the requirement, the proportion of babies born with neural tube defects dropped by 35%. But between 2017 and 2019, only about 28% of Latinas reported taking folic acid the month before becoming pregnant, compared to 46% of white women. Women on Medi-Cal, the state’s health insurance program for low-income families, are also less likely to take folic acid before pregnancy compared to women on private insurance.  To learn more about the proposal, read Ana’s story. Another bill related to maternal health, Assembly Bill 2319, was the subject of a racist letter sent to members of the Health Committee, according to lawmakers. The measure would require healthcare providers to undergo training for implicit bias, and for the training to include “recognition of intersecting identities.”  The bill’s co-author, Assemblymember Lori Wilson, said the letter was “vile and hateful.” Assembly Republicans also said the letter had no place in legislative debate: “While we may not always agree on policy, we are united to strongly condemn racism and the evil ideology behind this letter.” Wilson, a Suisun City Democrat who is chairperson of the Legislative Black Caucus, vowed to carry on with the measure. The proposals by Arumbula and Wilson follow state data showing that in 2020 California saw a ten-year high of pregnancy-related deaths. Black expectant mothers are particularly vulnerable: They are three times more likely to die of pregnancy-related complications than others. It’s a point raised by former state Senate leader Toni Atkins in a social media post last week. Meanwhile, maternity wards across the state are closing, creating “maternity care deserts,” and California midwives treating Medi-Cal patients struggle to keep their businesses afloat. A February report from the state auditor also found that state health departments failed to track the effectiveness of a perinatal care program for Medi-Cal patients. Digital Democracy: CalMatters has launched Digital Democracy, a project using the latest technologies to help Californians understand their state government and create more accountability for politicians. The website introduces each of the state’s 120 legislators and explains this year’s policy agenda. In our unprecedented database, you can instantly find any word uttered in a public hearing, every vote cast, every bill introduced and every dollar donated. For more details, see our about and methodology pages and read more from our engagement team. Other Stories You Should Know Builders can challenge impact fees New housing construction in a neighbourhood in Elk Grove on July 8, 2022. Photo by Rahul Lal, CalMatters From CalMatters housing reporter Ben Christopher:It’s about to get more difficult for local governments to slap construction projects with certain fees — and a bit easier for developers to sue governments when they do.  That’s thanks to a unanimous ruling the U.S. Supreme Court handed down Friday. As many court watchers expected, the justices sided with George Sheetz, a septuagenarian retiree who sued El Dorado County over a $23,420 building fee. Sheetz’s lawyers argued that the county should have had to prove that this five-digit fee matched the cost that his manufactured home actually would inflict on local roads and highways. That requirement was established in a four-decade-old court ruling also out of California. El Dorado County, with the backing of both the Gov. Gavin Newsom and President Joe Biden administrations, countered that such a high bar is only required of one-off fees levied by regulators, not fees scheduled for all developments and established by elected bodies, like the county board of supervisors. In its 9-0 ruling, the Supreme Court said that “there is no basis for affording property rights less protection in the hands of legislators than administrators.” A few possible consequences of the ruling: Cities and counties now have to show that impact fees are connected to and “roughly proportionate” to the fiscal impact of a given development. That could have the unintended consequence of slowing down permitting.  Developers may now have a powerful new legal tool to challenge fees that they think are too high. And they are high here. As of 2015, the average impact fee on a single family home in California was more than four times the national average. But it’s too soon to say exactly how all of this will shake out. That’s because the court stopped short of saying exactly how far governments have to go to justify their fees — or whether El Dorado County already cleared that hurdle in this case. Those questions were left to lower courts. State cracks down on water Armona’s new $9 million well and treatment facility to remove arsenic in its water supply. Photo by Larry Valenzuela, CalMatters/CatchLight Local The State Water Resources Control Board is poised to penalize Kings County groundwater agencies for failing to manage overpumping in the region’s water supply — a move that would set a new precedent. As CalMatters water reporter Rachel Becker explains, the board on Tuesday is expected to decide whether to put county agencies on probation for unsuccessfully restricting farmers’ overdrafting of the water supply from the Tulare Lake underground basin. If the board decides to crack down, it will be the first time the state imposes penalties under a landmark 2014 law that requires agencies to achieve groundwater sustainability by 2040.The board’s decision could also signal how the state will approach five other overpumped San Joaquin Valley basins that may face probation as well. Overpumping in Kings County has caused household and community water wells to dry up and land to sink, which endangers canals, aqueducts and flood-controlling levees. And because wells must reach deeper into the ground to extract water, contaminants such as arsenic are released and cause water contamination levels to rise. Putting Kings County agencies on probation could mean imposing state fees totaling as much as $10 million a year, according to a CalMatters analysis. It could also lead to state regulators eventually managing the region’s groundwater. This has small farmers in the region concerned that they’ll be forced out of business due to the state’s steep fees. The basin provides drinking and irrigation water for 146,000 residents and supports a multibillion-dollar agricultural industry. For more on this issue, read Rachel’s story. California’s water crisis, explained: CalMatters has a detailed look at how California might increase its water supply, and a dashboard tracking the state’s water situation. CalMatters Commentary Ideas festival: CalMatters is hosting its first one, in Sacramento on June 5-6. It will include a discussion on broadband access and a session with Zócalo Public Square on California’s next big idea. Featured speakers include Julián Castro, CEO of the Latino Community Foundation, and Barbara McQuade, a former U.S. attorney and MSNBC legal analyst. Find out more from our engagement team and buy tickets here. Other things worth your time: Some stories may require a subscription to read. CA granted federal disaster relief for historic February storms // Los Angeles Times  Ballot measure for America’s highest wage could be victim of past wins // Politico Prop. 22 gains liberal support as case heads to state high court // San Francisco Chronicle PG&E customers were billed for a TV promo campaign // The Sacramento Bee Google blocks some CA news as fight over online journalism bill escalates // Politico Bill to mandate ‘science of reading’ in CA classrooms dies // EdSource CA abortions increased after Roe vs. Wade was overturned // Los Angeles Times The first high-speed rail trains are closer to coming to CA // San Francisco Chronicle Environmental concerns raised by rocket flights // The San Diego Union-Tribune SF jails lock down after alleged assaults on staff // Los Angeles Times SF background check startup Checkr cutting 260 jobs // San Francisco Examiner SF $2B Central Subway has lots of leaks, few riders // The San Francisco Standard Kern County activist faces 18 felony counts over alleged threats // Los Angeles Times Former Windsor mayor’s accusers speak out on no charges // San Francisco Chronicle

California is struggling to provide maternal health for its residents. But as one proposal aims to prevent birth defects, another has received hateful pushback that’s been condemned by both political parties. As CalMatters health reporter Ana B. Ibarra writes, Assemblymember Joaquin Arambula has introduced a bill that would require corn masa flour makers to add […]

A premature baby in incubator. Photo via iStock
A premature baby in incubator. Photo via iStock
A premature baby in incubator. Photo via iStock

California is struggling to provide maternal health for its residents. But as one proposal aims to prevent birth defects, another has received hateful pushback that’s been condemned by both political parties.

As CalMatters health reporter Ana B. Ibarra writes, Assemblymember Joaquin Arambula has introduced a bill that would require corn masa flour makers to add 0.7 milligrams of folic acid per pound of flour. Though federal law requires other grain products, such as cereals, breads and pasta, be fortified with folic acid, corn masa flour is not included. The corn flour is a key ingredient used in many classic Latino foods.

  • Arambula, a Fresno Democrat and physician, to CalMatters: “Food is the best way that we can get folic acid into our communities before they’re pregnant. Oftentimes the prenatal vitamins that we give to pregnant people are too late.” 

Research has shown that folic acid, which can be found in prenatal and women’s multi-vitamins, promotes healthy cell growth, and can prevent birth defects when taken before and during the early weeks of pregnancy. Since 1998, when the U.S. Food and Drug Administration handed down the requirement, the proportion of babies born with neural tube defects dropped by 35%.

But between 2017 and 2019, only about 28% of Latinas reported taking folic acid the month before becoming pregnant, compared to 46% of white women. Women on Medi-Cal, the state’s health insurance program for low-income families, are also less likely to take folic acid before pregnancy compared to women on private insurance. 

To learn more about the proposal, read Ana’s story.

Another bill related to maternal health, Assembly Bill 2319, was the subject of a racist letter sent to members of the Health Committee, according to lawmakers.

The measure would require healthcare providers to undergo training for implicit bias, and for the training to include “recognition of intersecting identities.” 

The bill’s co-author, Assemblymember Lori Wilson, said the letter was “vile and hateful.”

Assembly Republicans also said the letter had no place in legislative debate: “While we may not always agree on policy, we are united to strongly condemn racism and the evil ideology behind this letter.”

Wilson, a Suisun City Democrat who is chairperson of the Legislative Black Caucus, vowed to carry on with the measure.

The proposals by Arumbula and Wilson follow state data showing that in 2020 California saw a ten-year high of pregnancy-related deaths. Black expectant mothers are particularly vulnerable: They are three times more likely to die of pregnancy-related complications than others. It’s a point raised by former state Senate leader Toni Atkins in a social media post last week.

Meanwhile, maternity wards across the state are closing, creating “maternity care deserts,” and California midwives treating Medi-Cal patients struggle to keep their businesses afloat. A February report from the state auditor also found that state health departments failed to track the effectiveness of a perinatal care program for Medi-Cal patients.


Digital Democracy: CalMatters has launched Digital Democracy, a project using the latest technologies to help Californians understand their state government and create more accountability for politicians. The website introduces each of the state’s 120 legislators and explains this year’s policy agenda. In our unprecedented database, you can instantly find any word uttered in a public hearing, every vote cast, every bill introduced and every dollar donated. For more details, see our about and methodology pages and read more from our engagement team.


Other Stories You Should Know


Builders can challenge impact fees

New housing construction in a neighbourhood in Elk Grove on July 8, 2022. Photo by Rahul Lal, CalMatters

From CalMatters housing reporter Ben Christopher:

It’s about to get more difficult for local governments to slap construction projects with certain fees — and a bit easier for developers to sue governments when they do. 

That’s thanks to a unanimous ruling the U.S. Supreme Court handed down Friday.

As many court watchers expected, the justices sided with George Sheetz, a septuagenarian retiree who sued El Dorado County over a $23,420 building fee.

Sheetz’s lawyers argued that the county should have had to prove that this five-digit fee matched the cost that his manufactured home actually would inflict on local roads and highways. That requirement was established in a four-decade-old court ruling also out of California.

El Dorado County, with the backing of both the Gov. Gavin Newsom and President Joe Biden administrations, countered that such a high bar is only required of one-off fees levied by regulators, not fees scheduled for all developments and established by elected bodies, like the county board of supervisors.

In its 9-0 ruling, the Supreme Court said that “there is no basis for affording property rights less protection in the hands of legislators than administrators.”

A few possible consequences of the ruling:

  • Cities and counties now have to show that impact fees are connected to and “roughly proportionate” to the fiscal impact of a given development. That could have the unintended consequence of slowing down permitting. 
  • Developers may now have a powerful new legal tool to challenge fees that they think are too high.

And they are high here. As of 2015, the average impact fee on a single family home in California was more than four times the national average.

But it’s too soon to say exactly how all of this will shake out. That’s because the court stopped short of saying exactly how far governments have to go to justify their fees — or whether El Dorado County already cleared that hurdle in this case. Those questions were left to lower courts.

State cracks down on water

The water treatment facility in Armona on April 4, 2024. Armona, a small unincorporated community home to farmworkers in Kings County, had substantial arsenic contamination until a new $9 million well was installed more than 1,200 feet deep. Photo by Larry Valenzuela, CalMatters/CatchLight Local
Armona’s new $9 million well and treatment facility to remove arsenic in its water supply. Photo by Larry Valenzuela, CalMatters/CatchLight Local

The State Water Resources Control Board is poised to penalize Kings County groundwater agencies for failing to manage overpumping in the region’s water supply — a move that would set a new precedent.

As CalMatters water reporter Rachel Becker explains, the board on Tuesday is expected to decide whether to put county agencies on probation for unsuccessfully restricting farmers’ overdrafting of the water supply from the Tulare Lake underground basin. If the board decides to crack down, it will be the first time the state imposes penalties under a landmark 2014 law that requires agencies to achieve groundwater sustainability by 2040.

The board’s decision could also signal how the state will approach five other overpumped San Joaquin Valley basins that may face probation as well.

Overpumping in Kings County has caused household and community water wells to dry up and land to sink, which endangers canals, aqueducts and flood-controlling levees. And because wells must reach deeper into the ground to extract water, contaminants such as arsenic are released and cause water contamination levels to rise.

Putting Kings County agencies on probation could mean imposing state fees totaling as much as $10 million a year, according to a CalMatters analysis. It could also lead to state regulators eventually managing the region’s groundwater.

This has small farmers in the region concerned that they’ll be forced out of business due to the state’s steep fees. The basin provides drinking and irrigation water for 146,000 residents and supports a multibillion-dollar agricultural industry.

For more on this issue, read Rachel’s story.

California’s water crisis, explained: CalMatters has a detailed look at how California might increase its water supply, and a dashboard tracking the state’s water situation.


CalMatters Commentary

Ideas festival: CalMatters is hosting its first one, in Sacramento on June 5-6. It will include a discussion on broadband access and a session with Zócalo Public Square on California’s next big idea. Featured speakers include Julián Castro, CEO of the Latino Community Foundation, and Barbara McQuade, a former U.S. attorney and MSNBC legal analyst. Find out more from our engagement team and buy tickets here.


Other things worth your time:

Some stories may require a subscription to read.


CA granted federal disaster relief for historic February storms // Los Angeles Times 

Ballot measure for America’s highest wage could be victim of past wins // Politico

Prop. 22 gains liberal support as case heads to state high court // San Francisco Chronicle

PG&E customers were billed for a TV promo campaign // The Sacramento Bee

Google blocks some CA news as fight over online journalism bill escalates // Politico

Bill to mandate ‘science of reading’ in CA classrooms dies // EdSource

CA abortions increased after Roe vs. Wade was overturned // Los Angeles Times

The first high-speed rail trains are closer to coming to CA // San Francisco Chronicle

Environmental concerns raised by rocket flights // The San Diego Union-Tribune

SF jails lock down after alleged assaults on staff // Los Angeles Times

SF background check startup Checkr cutting 260 jobs // San Francisco Examiner

SF $2B Central Subway has lots of leaks, few riders // The San Francisco Standard

Kern County activist faces 18 felony counts over alleged threats // Los Angeles Times

Former Windsor mayor’s accusers speak out on no charges // San Francisco Chronicle

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.

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