EDF Health

Beyond paper, part 2: PFAS intentionally used to make plastic food packaging

Tom Neltner, Chemicals Policy Director; Maricel Maffini, consultant; and Tom Bruton with Green Science Policy Institute

Since 2002, FDA has authorized the use of four types of per- and polyfluorinated alkyl substances (PFAS) to make plastic food packaging, one as recently as 2016. The PFAS are allowed in plastic at levels up to 2000 parts per million (ppm); although lower than those used to greaseproof paper, these levels still contaminate food. The PFAS are added to facilitate the production of articles such as bottles and wraps. They reportedly improve polymer extrusion, reduce build-up on the injection mold, and improve surface roughness among other technical effects.

EDF submitted a Freedom of Information Act (FOIA) request for seven food contact substance notices (FCNs) that FDA has authorized. From FDA’s response[1], we learned that these PFAS can contaminate food in contact with the packaging. In one case the overall amount of the PFAS in the diet would be as high as 41 ppb (see pages 31-32 of FOIA response) – much more than is tolerated for some PFAS in drinking water.

These plastic processing aids, along with fluorinated polyethylene, are the latest additions to a growing list of sources of ‘forever chemicals’ in the diet. They join environmental contamination and greaseproofed paper and cardboard as sources that food companies must consider in order to keep PFAS out of their products and respond to consumer demand for safer food. Given the evidence, FDA needs to move forward pursuant to our June 2021 citizens petition to evaluate the safety of PFAS taking into account the cumulative effect of these chemicals in the diet from many sources.

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10 ways the incoming FDA Commissioner should protect people from toxic chemicals in food

Tom Neltner, Chemicals Policy Director.

The FDA’s critical role in the COVID-19 pandemic has brought intense interest in whom President Biden will nominate to lead the agency as its new commissioner.

While COVID-19 is the priority, the FDA obviously has many vital other responsibilities. Though it doesn’t get that much attention, one of the important roles of the agency is to protect the public from unsafe chemicals in food. Frankly, their record has been disappointing, but the new administration has an opportunity to fix some key problems that scientists and doctors have been warning us about for years.

Here are ten things the new FDA Commissioner should do to keep unsafe chemicals out of our food. The list ranges from actions on specific chemicals to broader reforms.

  1. Stop letting industry decide for themselves, in secret, whether chemicals are safe and can be added to food. EDF, represented by Earthjustice, and the Center for Food Safety, have sued the agency to close the dangerous “Generally Recognized as Safe” loophole.
  2. Systematically reassess dangerous food chemicals it has allowed to be used in food based on new information. The FDA approved the use of many chemicals in food decades ago, and we now have evidence that some of these are unsafe. A chemical shouldn’t be given a forever approval. There needs to be a systematic process to review the scientific evidence, especially when new risks come to light.
  3. Ban the use of perchlorate, an ingredient in rocket fuel, from use in plastic packaging and equipment that comes into contact with food. Perchlorate gets into food, and exposure is particularly dangerous for pregnant women, infants, and young children, as it has been linked to developmental delays, reduced growth, and impaired learning abilities. We’ve sued the FDA to get this chemical out of food, and the case is pending.
  4. Comply with its 60-year-old Congressional mandate to look at the cumulative effect of chemical exposures people have when deciding whether to approve the use of related chemicals in food. EDF’s investigation of 900 approval decisions found that just one followed this common-sense mandate. The reality is that no one is exposed to just one chemical – so the agency shouldn’t be analyzing chemicals’ safety as if that were the case. FDA must respond to a petition filed by EDF and other organizations demanding that the agency follow the law and assess chemicals as classes.
  5. Drive down levels of heavy metals in food. Over the last decades, evidence has emerged of concerning levels of lead, arsenic, and cadmium in food consumed by children, such as rice, juice, and root crops like sweet potatoes and carrots. The FDA should move quickly and aggressively on its new commitment to set limits on heavy metals in food children eat and should also set limits for other food.
  6. Use modern science when evaluating if a chemical poses a health risk. The FDA is stuck in the past by relying on outdated, less accurate scientific methods and ignoring the evolving information we now know about chemical exposure. You wouldn’t insist on driving a car the Flintstones drove just because that was the first car ever.
  7. Prohibit lead from being added to materials that contact food, such as the tin that lines metal cans, and tighten limits for lead in bottled water. EDF’s analysis of FDA data found lead in 98% of certain canned fruits compared to 3% in fresh or frozen types. We’ve sent a formal petition to FDA requesting it immediately take action to ban these harmful and unnecessary uses of lead. Though it’s not a food safety issue, the FDA should also reject a challenge to its decision to ban lead acetate in hair dye. That challenge has put the FDA decision on hold, meaning that people are literally still putting lead on their head!
  8. Prohibit ortho-phthalates from being added to food packaging and processing equipment. These chemicals are known to disrupt hormones and harm brain development. The FDA is significantly overdue in meeting its legally required deadline to make a decision based on a petition from 2016 by EDF and nine other consumer, public health, and environmental groups to ban these chemicals.
  9. Be more transparent about the decisions it is making on chemicals in food. Information about FDA decisions should be publicly available without a Freedom of Information Act request and a months-long wait to learn more about agency actions on the chemicals in our food supply.
  10. Take aggressive action on harmful PFAS in food packaging and processing equipment. PFAS (Per- and poly-fluorinated alkyl substances) can provide water and grease resistance to paper and paperboard and can also leach into food. Growing evidence links PFAS to a wide range of serious health effects – from developmental problems to cancer. And now we know that many types of PFAS bioaccumulate in the body.
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It’s time to eliminate lead from tin coating and solder on metal food cans

Tom Neltner, J.D. is the Chemicals Policy Director.

In October 2019, we reported finding canned foods had a surprising number of samples with lead based on the Food and Drug Administration’s testing results. Almost half of the 242 samples had detectable lead, including a staggering 98% of 70 canned fruit samples.

We suspect that the high lead detection rates are a result of lead in the tin – either added to make an alloy or as a contaminant – used to coat the steel or join steel pieces together in the cans. This lead can then leach from the coating or solder into the food. Light-colored fruits and fruit juices would be more likely to have lead contamination based on a report indicating they are commonly packaged in tin-coated steel cans without a synthetic coating on the inside isolating the food from the tin. The lead detections in the other canned products in FDA’s study could have resulted from flawed synthetic coatings.

In December 2020, EDF and ten health, consumer, and environmental groups[1] petitioned FDA to ban the use of lead in food contact materials such as tin. We also included that FDA should presume that lead was intentionally used when levels in food contact materials are at or above 100 parts per million (ppm) and provided an option for the agency to specifically authorize the use only if:

  • The part of the food contact article that contains added lead does not contact food under intended conditions of use; or
  • No lead migrates into food from the food contact article under intended conditions of use.

Our petition demonstrates that, because lead is a carcinogen that is unsafe at any level in the blood, its use in tin coatings and solder for food cans should be expressly prohibited. The agency posted the petition for public comment and must make a decision how to proceed by June 2021. There is no deadline for comments, but it is best to submit them by April 1 so they can influence the agency’s decision.

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Best practices for reducing cadmium in food: New review from FDA scientists

Tom Neltner, J.D.Chemicals Policy Director and Maricel Maffini, Ph.D., Consultant

Note to readers: As we all grapple with the grave global health challenge from COVID19, we want to acknowledge the essential services that the professionals at the Food and Drug Administration and in the food production, processing and retail industries provide in continuing to deliver food. In the meantime, we are continuing to work towards improved health protections – including reducing chemicals in food. We’ll plan to keep sharing developments that may be useful to you. In the meantime, please stay safe and healthy.

Two years ago, the Food and Drug Administration (FDA) put cadmium on our radar when the Toxic Elements Working Group included cadmium together with arsenic, lead and mercury as metals affecting children’s neurological development. As part of that effort, FDA committed to look at all four metals across all foods instead of one contaminant, one food at a time. Last year, FDA’s scientists published a peer-reviewed article assessing children’s exposure to lead and cadmium in the diet. They found that spinach, lettuce, sunflower seeds, potato chips and wheat cereal were among the top 10 foods with the highest cadmium concentration.

New review of mitigation strategies

This year, FDA’s scientists published in a peer-reviewed journal a review of mitigation strategies to reduce dietary exposure to cadmium. Because plants uptake cadmium from the soil and “70 to 80% of dietary cadmium intake in humans comes from plant-based food,” the article focuses on methods to “reduce or prevent initial uptake by plants.” The authors explained that cadmium enters the food supply through natural and manmade sources, highlighting that cadmium often is a contaminant in phosphate fertilizers. Cadmium is also a contaminant in zinc used to galvanize steel.

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FDA’s updated results for PFAS in food suggest progress but raise questions about its method

Tom Neltner, J.D.Chemicals Policy Director and Maricel Maffini, Ph.D., Consultant

The Food and Drug Administration (FDA) recently released revised lab results from testing for 16 PFAS in food. Initial results of the testing were announced last June and gained wide attention because the levels of PFAS in certain foods were quite high. Surprisingly, the revised lab results show significantly fewer detections and, in the case of ground turkey and tilapia, concentrations of PFOS that are almost nine times lower than the values initially reported in June. In addition to the revised lab results, the agency also released a validated method for analyzing food for the substances and updated its PFAS webpage.

We were glad to see FDA’s ongoing work on PFAS and have already heard from commercial laboratories who are considering using the validated method as a potential new service to offer their customers. In analyzing the documentation that FDA provided,[1] we have concerns about the agency’s criteria to determine whether a sample had detectable levels of a PFAS. It appears unnecessarily restrictive and effectively underestimates the public’s exposure to PFAS. We are planning to meet with the agency to better understand their rationale for the criteria selection and its implications.

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Too much cadmium and lead in kids’ food according to estimates by FDA

Tom Neltner, J.D.Chemicals Policy Director and Maricel Maffini, Ph.D., Consultant

The Food and Drug Administration (FDA) released a study in April estimating young children’s exposure to lead and cadmium from their diets and identifying food groups that are a significant source of these heavy metals. The study used data from the agency’s Total Diet Study (TDS) program for 2014 to 2016 and the Center for Disease Control and Prevention’s (CDC) What We Eat in America (WWEIA) Survey for 2009 to 2014.[1]

The study is a reminder of how pervasive heavy metals are in children’s diets and that, while the levels are relatively low, the cumulative exposure is significant. Based on FDA’s analysis (Table 1 below), we estimate that about 2.2 million children exceeded the agency’s maximum daily intake (MDI) for lead at a given time. The results for cadmium are new and worrisome, with estimated daily intake (EDI) levels that are 3 to 4 times greater than lead. And while FDA has not yet set an MDI limit for cadmium, the average young child exceeds most of the relevant daily exposure limits set by other agencies. Clearly, cadmium warrants greater attention, but note that the evidence of neurotoxicity is still emerging.

Table 1: Young children’s estimated dietary intake (EDI) of lead and cadmium based on FDA’s TDS results for years 2014 to 2016 (based on hybrid method)

Age GroupLead Mean EDI Lead 90th Percentile EDICadmium Mean EDICadmium 90th Percentile EDI
1-6 years1.8 µg/day2.9 µg/day6.8 µg/day11.0 µg/day
1-3 years1.7 µg/day2.6 µg/day5.8 µg/day9.7 µg/day
4-6 years2.0 µg/day3.1 µg/day7.8 µg/day12.1 µg/day
LimitsFDA’s MDI is 3.0No MDL set by FDA. Intake exceeded most limits set by other agencies

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