by Marion Nestle

Currently browsing posts about: Chemicals

May 27 2025

The MAHA Commission report: some thoughts

The MAHA Commission released its report last week: The MAHA Report: Make Our Children Healthy Again.  Assessment.

This is one impressive report, forcefully written and tightly documented (it cites my work, among that of many others).

Overall, it paints a devastating portrait of how our society has failed our children.

It begins by stating that “The health of American children is in crisis” due to:

  • Poor diet
  • Aggregation of environmental chemicals
  • Lack of physical activity and chronic stress
  • Overmedicalization

The result: high rates of obesity, type 2 diabetes, neurodevelopmental disorders, cancer, allergies  and mental health problems among kids.

Here are some selected items I particularly appreciated in the report.  The bullet points are direct quotes.

On poor diet

  • Most American children’s diets are dominated by ultra – processed foods (UPFs ) high in added sugars , chemical additives , and saturated fats, while lacking sufficient intakes of fruits and vegetables.
  • Pesticides , microplastics , and dioxins are commonly found in the blood and urine of American children and pregnant women— some at alarming levels.
  • Children are exposed to numerous chemicals , such as heavy metals , PFAS , pesticides , and phthalates, via their diet, textiles, indoor air pollutants, and consumer products.
  • To get into schools , many food companies have reformulated their products with minor ingredient adjustments to qualify for the federal Smart Snack program by meeting the school nutrition standards, which children can purchase separate from school meals.

The driving factors for poor diets

  • Consolidation of the food system
  • Distorted nutrition research and marketing
  • Compromised dietary guidelines

On the dietary guidelines  

They maintain problematic reductionist recommendations, such as:

  • Advising people to “reduce saturated fat” or “limit sodium” instead of focusing on minimizing ultra-processed foods.
  • Treating all calories similarly, rather than distinguishing between nutrient-dense foods and ultra-processed products.
  • Remain largely agnostic to how foods are produced or processed: There is little distinction between industrially processed foods and home-cooked or whole foods if their nutrient profiles look similar.
  • Added sugars, saturated fats and sodium are treated as proxies for ultra-processed foods. For instance, a cup of whole-grain ready to eat fortified breakfast cereal and a cup of oatmeal with fruit might both count as “whole grain servings,” and the guidelines do not weigh in on differences in processing.

They also,

  • Do not explicitly address UPFs.
  • Have a history of being unduly influenced by corporate interests .

On food systems

  • The greatest step the United States can take to reverse childhood chronic disease is to put whole foods produced by American farmers and ranchers at the center of healthcare.
  • Traditional Field Crops vs. Specialty Crops : Historically, federal crop insurance programs have primarily covered traditional field crops like wheat , corn , and soybeans, while providing much less support for specialty crops such as fruits, vegetables, tree nuts, and nursery plants.

On Corporate Capture 

  • Although the U.S. health system has produced remarkable breakthroughs, we must face the troubling reality that the threats to American childhood have been exacerbated by perverse incentives that have captured the regulatory bodies and federal agencies tasked with overseeing them .
  • Limited comparisons between industry-funded research versus non- industry studies have raised concerns over potential biases in industry-funded research…Additionally, some industry leaders have engaged in promoting ghostwriting and sponsored reviews to influence the scientific literature.
  • Notably, this ghostwriting strategy mirrors tactics used by the tobacco industry to distort scientific consensus is largely propelled by “corporate capture,” in which industry interests dominate and distort scientific literature, legislative actions, academic institutions, regulatory agencies, medical journals, physician organizations, clinical guidelines, and the news media.
  • The pharmaceutical industry, with its vast resources and influence, is a primary driver of this capture, though similar dynamics pervade the food and chemical industries.

Research recommendations

  • GRAS Oversight Reform: Fund independent studies evaluating the health impact of self-affirmed GRAS food ingredients, prioritizing risks to children and informing transparent FDA rulemaking.
  • Nutrition Trials: NIH should fund long-term trials comparing whole-food, reduced-carb, and low-UPF diets in children to assess effects on obesity and insulin resistance.
  • Large-scale Lifestyle Interventions: Launch a coordinated national lifestyle-medicine initiative that embeds real-world randomized trials-covering integrated interventions in movement, diet, light exposure, and sleep timing-within existing cohorts and EHR networks.

Comment

The report has been criticized for not getting some of the science right.  The agriculture industry is particularly concerned about the attack on the chemicals it uses.  It is said to be outraged by the report.  The report did throw Big Ag this bone: “Today, American farmers feed the world, American companies lead the world, and American energy powers the world.”

But the report raises one Big Question:  What policies will this administration come up with to deal with these problems?  These, presumably, will be in the next report, due in about 80 days.

This is an extraordinary report, a breath of fresh air in many ways, and I would love to know who wrote it.

But to fix the problems it raises will require taking on not only Big Ag, but also Big Food, Big Pharma, Big Chemical, and other industries affected by these and its other recommendations (the report also says a lot about drugs and mental health).  Big Ag has already weighed in.  Others are sure to follow.

Oh.  And it’s hard to know how policies can be implemented, given the destructive cuts to FDA, CDC, and NIH personnel and budget.

I will be watching this one.  Stay tuned.

Resources

Additional resource

 

Sep 20 2024

PFAS in farmland: the next environmental frontier

For some reason, this did not get sent out yesterday and I do not want you to miss it.  It’s a really important story.

PFAS, Per- and polyfluoroalkyl substances, are synthesized chemicals resistant to water, grease, and heat, ubiquitous in consumer products, and widely dispersed in nature and in our bodies.

Their health effects are alarming: they are endocrine disruptors with adverse effects on the immune system, liver, birth weight, cancer.

Now they turn up in farmland, poisoning soil as well as people.

The New York Times did an investigation: Something’s Poisoning America’s Land. Farmers Fear ‘Forever’ Chemicals.

Known as “forever chemicals” because of their longevity, these toxic contaminants are now being detected, sometimes at high levels, on farmland across the country, including in Texas, Maine, Michigan, New York and Tennessee. In some cases the chemicals are suspected of sickening or killing livestock and are turning up in produce. Farmers are beginning to fear for their own health.

PFAS got on soil because of their presence in sewage sludge used as fertilizer.

PFAS in farmland is yet another reason to choose organics.  The Organic Standards specifically forbid use of sewage sludge as fertilizer.

The EPA is finally taking action on PFAS.  Better late than never.

Sep 6 2024

Weekend reading: Endocrine-Disrupting Chemicals (EDCs)

A reader suggested this report for weekend reading:  Endocrine Disrupting Chemicals : Threats to Human Health: Pesticides, Plastics, Forever Chemicals, and Beyond.

Among the report’s key takeaways:

  • EDCs in the environment may contribute to disorders with hormonal underpinnings such as diabetes, neurological disorders, reproductive disorders, inflammation, and compromised immune functioning.
  • EDCs do not behave like other chemicals, and current regulatory practices do not account for the ways that EDCs can pose health threats. EDC exposures at even extremely low dosages can alter biological outcomes and the effects of low doses cannot be predicted by the effects observed at high doses. This means there may be no safe dose for exposure to EDCs.
  • Products that may contain EDCs include furniture, toys and children’s products, food packaging, electronics, building materials, cosmetics, and many others. People can also be exposed to EDCs from pesticides, air pollutants, industrial waste, and other pathways.

The report reviews the research on pesticides (e.g., glyphosate), plastics and plasticizers (bisphenols, phthalates), household chemicals (arsenic), industrial chemicals (PFAS).  These show up in food and water, which is why they are matters of food politics.

This whole topic can be confusing: so many chemicals, so many effects, so much misinformation (especially from industry)—and you can’t see, taste, smell, or avoid them.

This report explains what everyone needs to know : the science, exposures, health effects, (especially in children), and regulatory needs.

This is a great place to start, troubling as it is to know about EDCs and how little is being done about them.

 

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Jun 27 2024

Microplastics are where? Oops.

If you haven’t been worried about microplastics in your body, perhaps this study will get your attention.

Here’s the abstract:

Its alarming conclusion:

The detection of MPs in penile tissue raises inquiries on the ramifications of environmental pollutants on sexual health.
Our research adds a key dimension to the discussion on man-made pollutants, focusing on MPs in the male reproductive system.

Everyone is worried about the decline in male sperm counts.  Could endocrine disrupting plastics be a cause?  If so, it’s time to get serious about cleaning them up and not producing more.

Feb 20 2024

Harmful chemicals in food: recent studies are not reassuring

I don’t say much about potentially harmful agricultural or other industrial chemicals in food for several reasons:

BUT (in capital letters because it is a bit one):

Studies of three chemicals illustrate these problems.

DICAMBA 

What it is: A herbicide used to kill broadleaf weeds that grow in fields of corn, wheat, and dicamba-tolerant soybeans.

Why it’s a worry: It can cause immediate toxic effects and might be carcinogenic.  It is highly volatile and can damage non-target plants through drifting, causing constant complaints from neighboring farmers.  The courts have overturned the EPA’s approval of dicamba use.  Even though the EPA admits dicamba has adverse effects on handlers as well as “birds, mammals, bees (larvae), aquatic plants and non-target terrestrial plants,” it is allowing existing stocks of dicamba to continue to be used.

The recent study: The headline: Alarming levels of weed killer found in study of pregnant women.  The study examined changes in the the number of pregnant women with dicamba in their urine and the amounts excreted from 2020-2012 to 2020-2022.  It found increases in both measures.

Conclusion: “Reliance on herbicides has drastically increased in the last ten years in the United States, and the results obtained in this study highlight the need to track exposure and impacts on adverse maternal and neonatal outcomes.”

PHTHALATES

What these are: Chemicals used to soften polyvinylchloride plastics.

The concern: Phthalates leach into food from plastic packaging materials.  They disrupt endocrine function.

The recent study:  Exposure to phthalates is associated with adverse birth outcomes such as decreased gestational age and increased risk of preterm birth.

Conclusion: “The $1·63–8·14 billion costs of preterm birth described here …add to the disease burden and costs of plastic in the USA, which were recently estimated to be $250 billion annually….Our findings also support individual behavioural interventions to reduce exposure. These include choosing personal care products labelled to be free of phthalates, and replacement of packaged foods with fresh foods.

CHLORMEQUAT

What this is: a plant growth regulator used on wheat, oats, and barley to decrease stem height, making the plants easier to harvest.

Why it’s a worry: Chlormequat has been linked to reduced fertility, altered fetal growth, and delayed puberty in animals.

The recent study: The headline: 80% of Americans test positive for chemical found in Cheerios, Quaker Oats that may cause infertility, delayed puberty.   The study found increasing amounts of this chemical in food and urine samples.

Conclusion: “These findings and chlormequat toxicity data raise concerns about current exposure levels, and warrant more expansive toxicity testing, food monitoring, and epidemiological studies.”

Comment: These are only three of all the chemicals out there that get into our food and appear in our bodies.  Yes, more research is needed to find out just how harmful they are.  But I see no evidence that they are good for us.  I think we need:

  • Much greater urgency and attention from FDA and EPA on getting these chemicals out of the food supply
  • More information about how to avoid the chemicals, especially in pregnant women and young children
  • Coalition advocacy for more stringent regulation (the Environmental Working Group is doing a great job but cannot do this alone)
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Jan 30 2024

The endless hazards of commercial baby foods: lead and pesticides

LEAD

I’ve posted previously about the recent finding of high levels of lead—and now chromium—in applesauce pouches.

I’ve also posted about the inadequacy of inspections of such products.

The lead problems are continuing.

The FDA says it has received 89 complaints as of January 16, with the average age of the affected children less than one year (you have to scroll way down to see the latest updates).

The CDC says it has received reports from state and local health departments:

Total Cases: 385

Confirmed Cases: 97

Probable Cases: 253

Suspect Cases: 35

Both agencies say: Do not feed recalled products to your children!

  • WanaBana apple cinnamon fruit puree pouches – including three packs
  • Schnucks-brand cinnamon-flavored applesauce pouches and variety pack
  • Weis-brand cinnamon applesauce pouches

What caused this?  The best guess is (deliberate?) adulteration of the cinnamon.  Not nice to think about.

PESTICIDES

I read in The Guardian: Nearly 40% of conventional baby food contains toxic pesticides, US study finds.

The research, conducted by the Environmental Working Group (EWG) non-profit, looked at 73 products and found at least one pesticide in 22 of them. Many products showed more than one pesticide, and the substances present a dangerous health threat to babies, researchers said.

The EWG research: New EWG study (2023): Pesticides still found in baby food but most-toxic threats eliminated through advocacy, regulation.

  • New EWG research finds fewer pesticides in baby food than in the  groundbreaking 1995 study, Pesticides in Baby Food.
  • Though EWG detected some pesticides, the most toxic have been removed.
  • EWG’s advocacy helped drive market change – but the fight for safer food continues.
  • Federal oversight of pesticides in children’s food is inadequate, as explored in depth in a 1993 landmark National Academies of Science study.
  • No pesticides were detected in any of the 15 organic products.

Well, this message is clear: if you must buy commercial baby food, buy organic.

Overall, you are better off feeding babies the healthy foods you eat, pureed or cut up so they don’t cause choking, and as unsalted and unsugared as possible.

Nov 29 2023

RIP Brominated Vegetable Oil (BVO), maybe for good this time?

The FDA says it is proposing to revoke the regulation authorizing the use of brominated vegetable oil (BVO) in food.  In  transslation from FDA-speak, the agendy now intends to ban BVO.

This is the second time I have written an RIP for BVO.  The first was in 2013—ten years ago!— when PepsiCo said it no longer use BVO in Gatorade in response to a petition from a teenage influencer.

BVO, a flame retardent, is made by adding bromine to vegetable oil.  Studies for years have found BVO to cause neurological and other health problems.  The FDA says:

In our 2014 review, we identified four unresolved safety questions with respect to the use of BVO in food: the potential for thyroid toxicity, bioaccumulation, developmental neurotoxicity, and reproductive toxicity. We determined that the safety data and information available did not provide evidence of a health threat resulting from the limited permitted use of BVO as a flavoring stabilizer in fruit-flavored beverages,…We concluded that high-quality data from contemporary studies, performed under current guideline standards, were needed to address the knowledge gaps regarding the safety of BVO …. The rodent safety studies…confirmed previous reports that dietary exposure to BVO is toxic to the thyroid and results in bioaccumulation of lipid-bound bromine in the body at doses relevant to human exposure.

OK, but this FDA action has an even longer history, and shockingly so.

In 1970, the FDA ruled that BVO could no longer be considered “Generally Recognized as Safe” (GRAS), but took no further action saying removing it was not much of a priority.

The UK banned it isoon after; the European Union got rid of it in 2008.  But the FDA did not.

In summary, the FDA has been worried about BVO since 1970 but is only just now getting around to banning it.

Why?  I can only speculate.

  • The soft drink industry is losing power now that people view it as producing unhealthy products.
  • California recently took the lead and banned BVO along with three other questionably safe additives.
  • Or maybe it just didn’t judge the evidence for harm as adequate.

Better now than never.

Resources

Mar 16 2023

The politics of chocolate: a few items with comment

Mars convinces emerging market consumers to eat more chocolate, the Financial Times reports.

Mars has embarked on a drive to convince developing country consumers to eat more chocolate, claiming it is on track to double the value of its confetionery sales in emerging markets in teh five years to 2024….”The amount of chocolate that an Indian or Mexican consumes is 10 times or less than a European…So there is a gigantic opportunity take that low…per capita consumption closer to Europe.”

[In response to a question about the health effects of eating more chocolate] “To continue to be a super successful snacking company, we need to evolve our portfolio…and offer choices….If you go to India, you go to Mexico right now, you will see new offerings [from] us that are playing at the lower price point that didn’t exist [before].”

Lead and cadmium could be in your dark chocolate,says Consumer Reports.

CR tested a mix of brands, including smaller ones, such as Alter Eco and Mast, and more familiar ones, like Dove and Ghirardelli.

For 23 of the bars, eating just an ounce a day would put an adult over a level that public health authorities and CR’s experts say may be harmful for at least one of those heavy metals. Five of the bars were above those levels for both cadmium and lead. Read more about how CR tested dark chocolate (PDF).

NCA [National Confectioners Association] issues statement on Consumer Reports study into heavy metals in chocolate and cocoa.

Chocolate and cocoa are safe to eat and can be enjoyed as treats as they have been for centuries.  The…guidelines cited in the Consumer Reports study are not food safety standards…cadmium and lead are present in cocoa and chocolate due to soil and that bean cleaning during processing cocoa beans reduces lead and cadmium in chocolate products.

[and, of course] Food safety and product quality remain our highest priorities and we remain dedicated to being transparent and socially responsible.

Hershey debuts plant-based Reese’s and chocolate bar: The confections, which will hit shelves in March and April, are made with oats. This will be the first time the company offers permanent products in the category.

Comment

I don’t particularly like dark chocolate anyway.  Milk chocolate will have fewer heavy metals because it contains less cocoa and the Consumer Reports article is quite clear on which chocolates have fewer heavy metals.

But all of these items are about how to sell more chocolate which, alas, is not exactly a health food.  Do people in Mexico and India need more chocolate in their diets?  of course not, but chocolate companies “need” more sales regardless of health consequences.

This is about profits to shareholders, not public health.

And of course chocolate has a place in healthy diets—just not one that requires eating more of it.