EDF Health

The elephant in the room: potential biopersistence of short-chain PFAS

By Tom Neltner, Senior Director, Safer Chemicals Initiative / Published: February 20, 2019

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

In January 2018, US Food and Drug Administration (FDA) scientists published a peer-reviewed journal article stating a commonly used raw material to make greaseproof paper is likely to persist in the human body. FDA scientists’ sophisticated analysis and remarkable conclusion raises questions about the broad assumption that short-chain perfluorinated alkyl substances (PFAS), as a class, did not accumulate.

Strangely, two recent reviews funded by the FluoroCouncil, ignored FDA scientists’ study even though it was published ten months before the industry group submitted their analysis for peer-review. The peer reviewers appear to have missed the omission as well. As a result, the industry evaluations continue to perpetuate the flawed assumptions, concluding that perfluorohexanoic acid (PFHxA) and related short-chain PFAS “present negligible human health risk” and that this substance alone is a suitable marker for the “safety of fluorotelomer replacement chemistry.”

In this blog, we discuss the differences between the studies and the implications of the discordance between FDA’s and industry’s conclusions for the safety assessment of short-chain PFAS.

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How and when will FDA rule on ortho-phthalates in food? It’s anyone’s guess.

By Tom Neltner, Senior Director, Safer Chemicals Initiative / Published: January 29, 2019

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

The Food and Drug Administration (FDA) has yet to decide three overlapping petitions requesting the agency take action on uses of ortho-phthalates in contact with food. Two of the petitions—a food additive petition and a citizen petition—were submitted by EDF, Earthjustice and nine other public health allies. In those petitions, we requested the revocation of all uses of this class of chemicals in food because the agency can no longer conclude that such use is safe. The law required FDA to make a decision by no later than September 2018; that deadline has long since come and gone, and the agency hasn’t acted.

The third petition was submitted by the Flexible Vinyl Alliance, an industry group. It requested that the agency revoke the food additive uses of 26 ortho-phthalates because, according to FDA’s notice, they had been abandoned. The agency agreed to review the petition in July 2018 and invited public comment on it in November 2018.  Public comments were due on January 14, 2019.

In a press release about its petition, the industry group announced that only four ortho-phthalates “remain relevant in food contact applications”:  di(2-ethylhexyl) phthalate (DEHP), diisononyl phthalate (DINP), dicyclohexyl phthalate (DCHP) and diisodecyl phthalate (DIDP).  It also stated that it confidentially provided the agency with exposure and safety data on these four substances. The agency has made neither the industry’s petition nor the safety data on the four ortho-phthalates publicly available. We submitted a Freedom of Information Act (FOIA) request seeking industry’s “confidential” report and more information on the petition.  We await a response.

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FDA is dragging its feet while children continue to be exposed to perchlorate in food

By Tom Neltner, Senior Director, Safer Chemicals Initiative / Published: January 11, 2019

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

It has been more than 18 months since EDF and other advocates challenged the Food and Drug Administration’s (FDA) May 2017 decision to continue allowing perchlorate in dry food plastic packaging and food handling equipment.

While Congress gives FDA 180 days to act on food additive petitions, FDA must act “as soon as possible” on a challenge such as ours. However, the agency has yet to complete a review of its May 2017 decision in light of our concerns and evaluate whether to either stand by it, or reverse it. We did not expect FDA would take three times longer to review a decision already made, especially since our objection is largely based on the agency’s own data.

In the meantime, perchlorate in food continues to threaten children’s brains. The chemical, a component of rocket fuel, disrupts the thyroid gland’s normal function and reduces production of the thyroid hormone needed for healthy fetal and child brain development. FDA’s own studies show increased levels of perchlorate in foods such as baby food dry cereal, indicating the chemical’s intentional use in dry food packaging is the likely source of increased exposure for young children.

How FDA got it wrong

In FDA’s May 2017 decision to continue allowing intentional use of perchlorate in contact with dry food, the agency largely relied on flawed science to assess dietary exposure. Its three central errors were:

  1. Ignoring its own data showing significantly increased exposure for children;
  2. Woefully underestimating exposure based on a flawed migration test; and
  3. Unrealistically assuming that perchlorate-laden plastic would only contact food once.

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Lead in hair dye – one company considers it safe

By Tom Neltner, Senior Director, Safer Chemicals Initiative / Published: January 4, 2019

Tom Neltner, J.D., Chemicals Policy Director

In October 2018, the Food and Drug Administration (FDA) banned the use of lead acetate in hair dyes in response to a March 2017 color additive petition from EDF and other health advocates. In December, we learned that Combe, Inc., the maker of the lead-acetate based hair dye Grecian Formula, objected to FDA’s decision, requested a formal evidentiary public hearing to review the decision, and claimed the use is safe. The objection puts the FDA’s decision on hold awaiting a process that may take years to resolve. Apparently, the company thinks it is safe for men to slather skin-soluble lead on their head every couple of days and to risk exposing their families to a heavy metal for which no safe level of exposure has been identified.

Combe’s action was somewhat surprising because the company told CBS News that it removed lead acetate from its Grecian Formula “quite a long time ago,” but was unable to provide an exact date. Presumably, someone in the know updated the product’s Wikipedia page, which says Grecian Formula does not contain lead acetate as of July 2018, although an earlier version of the page said April 2018.

Whatever the date it was reformulated, why would Combe block FDA’s decision when it has long sold a lead-free brand – Just For Men – and had already reportedly removed lead from Grecian Formula? From a market standpoint, objecting to FDA’s decision benefits Youthair, Combe’s main competitor, which continues to sell a leaded-version of progressive hair dye.

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FDA-approved PFAS: A serious breakdown in assessing food additive safety

By Tom Neltner, Senior Director, Safer Chemicals Initiative / Published: November 4, 2018

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

This blog is the fourth in a series describing information we discovered in reviewing thousands of pages from the Food and Drug Administration’s (FDA) response to our Freedom of Information Act (FOIA) of the agency’s approval of 31 Food Contact Substance Notifications (FCNs) from 2002 to 2016 submitted by six companies for 19 distinct chemical mixtures of per- and poly-fluorinated substances (PFAS).

In this blog, we identify one company’s serious breach of its obligation to provide FDA with all relevant toxicology data. While hindsight is 20/20, we have reason to believe that if FDA had had all relevant information, it would have demanded more studies potentially revealing risks that are only now coming to light with related chemicals. Though we have not completed a similar review for the other companies, we think this inadequate approach to chemical safety is not unique to a single company, and FDA should reassess all its reviews given what is now known about PFAS chemicals.

Safety assessment requirements for food additives – including food contact substances

When a company seeks FDA’s approval of food additives (including food contact substances), it is required to provide the agency with all relevant chemistry, toxicology and environmental data so it can conduct a safety assessment. While the agency typically conducts a literature search of its own and of public databases, the company that is claiming the chemical’s use is safe is obligated to include any data that is inconsistent with the company’s conclusion.

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FDA reduces maximum daily limit for lead in children’s food by half

By Tom Neltner, Senior Director, Safer Chemicals Initiative / Published: October 25, 2018

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

On September 27, 2018, the Food and Drug Administration (FDA) reduced the maximum allowed daily intake of lead for children from 6 to 3 micrograms per day (µg/day). It has also set a limit for adults of 12.5 µg/day, to protect against possible fetal exposure in women who are unaware they are pregnant and to reduce infant exposure during nursing. The agency now refers to these limits as the “Interim Reference Level” to match the Centers for Disease Control and Prevention’s (CDC) terminology for elevated blood lead levels that warrant action. FDA reports that the new level for children is the amount of lead in food expected to result in a blood lead level of 5 µg/deciliter, with a 10-fold safety factor to account for differences across the population.

This change is a major step in FDA’s new push to limit heavy metals in food to protect children’s neurological development. In April 2018, FDA explained that its Toxic Elements Working Group is “looking at all the [heavy] metals across all foods rather than one contaminant, one food at a time,” and that “even though the level of a metal in any particular food is low, our overall exposure adds up because many of the foods we eat contain them in small amounts.”

As the agency indicated earlier this year, the next step for the Working Group is to “begin reevaluating the specific lead levels that FDA has set for a variety of foods.”

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