PFAS are a family of thousands of synthetic fluorinated compounds, used since the 1940s to make paper, fabric and cookware resist grease, water and heat. Unlike most entries on this list, they are not added to food on purpose. They reach it through packaging, processing equipment, and contaminated water and soil. The carbon-fluorine bond that makes them useful is among the strongest in chemistry, so they do not meaningfully break down. That is where the name “forever chemicals” comes from. They build up in water, in crops, in livestock, and in people.

Found In:

Grease-resistant paper packaging (fast food wrappers, microwave popcorn bags, takeout containers, pet food bags)
Drinking water, particularly near industrial sites, airports and military bases
Freshwater fish and some seafood
Produce grown in soil treated with contaminated biosolids
Dairy and meat from animals raised on contaminated water or feed
Nonstick cookware and some food processing equipment

Health Impact:

The US Agency for Toxic Substances and Disease Registry reports that epidemiological evidence “suggests associations” between higher PFAS exposure and increased cholesterol, lower antibody response to vaccines, changes in liver enzymes, pregnancy-induced hypertension and preeclampsia, small decreases in birth weight, and kidney and testicular cancer.

The regulatory picture is the part most people have backwards. There is no federal US ban on PFAS in food packaging. The main packaging use left the market in February 2024 because manufacturers agreed to stop selling it, following an FDA review of how long these compounds persist in the body. FDA then declared 35 food contact authorizations no longer effective in January 2025. That is a withdrawal, not a prohibition.

Four states passed actual bans on PFAS in food packaging: New York (December 2022), California (January 2023), Washington (February 2023, expanded May 2024) and Maine (May 2026). Where you live changes what is legal in the wrapper your food arrives in.

For drinking water, EPA finalized the first national PFAS limits on 10 April 2024, setting PFOA and PFOS at 4 parts per trillion. In May 2026 EPA proposed rescinding the limits for four of the six regulated compounds, and giving water systems until 2031 to meet the PFOA and PFOS standards.

The European Union has been working on a broad PFAS restriction since 2023. Its scientific committees issued opinions in March 2026. It is still not law.

Where Diet Discipline stands

ATSDR notes that animal studies found PFAS can damage the liver and the immune system, and caused low birth weight, birth defects, delayed development and newborn deaths in laboratory animals. It then adds that “humans and animals react differently to PFAS, and not all effects observed in animals may occur in humans.”

That caveat is scientifically fair, and it is not a reason to wait. Our position is that when a compound does that in animals and then does not break down in the environment or in the body, reducing exposure now is the reasonable move, rather than once the science finally closes. These compounds carry no nutritional value. They exist to keep grease from soaking through paper. That is a thin benefit to set against an open question about the immune system and about birth weight.

Healthier Alternatives:

Filter your water with a reverse osmosis or activated carbon system certified to NSF/ANSI 53 or 58. Check your utility’s annual water quality report first, so you know what you are actually dealing with.
Cook and store in glass, stainless steel or cast iron rather than nonstick.
Air pop your popcorn in a pot instead of using a coated microwave bag.
Move takeout onto a plate rather than eating out of the container, and avoid microwaving in it.
Cook more of your own food. The packaging route runs mostly through takeout and convenience products.
Check your state’s fish advisories if you eat freshwater fish you catch yourself.

Learn more: BPA, the other chemical that comes from the container

Scientific Evidence:

ATSDR, PFAS Health Effects: epidemiological evidence suggests associations with increased cholesterol, reduced vaccine antibody response, liver enzyme changes, pregnancy-induced hypertension, small decreases in birth weight, and kidney and testicular cancer
US EPA (10 April 2024), PFAS National Primary Drinking Water Regulation: first enforceable federal limits, PFOA and PFOS set at 4 parts per trillion
US EPA (18 May 2026): proposed rules to rescind the drinking water standards for PFHxS, PFNA and HFPO-DA and the mixture Hazard Index, and to extend PFOA and PFOS compliance to 2031
US FDA (February 2024): PFAS grease-proofing agents no longer sold for use on US paper and paperboard food packaging, a voluntary market phase-out following FDA review of 6:2 FTOH biopersistence
US FDA (January 2025): 35 food contact notifications for PFAS in paper and paperboard declared no longer effective
State bans on PFAS in food packaging: New York ECL 37-0203 (31 December 2022), California (1 January 2023), Washington Department of Ecology (1 February 2023, expanded 1 May 2024), Maine DEP (25 May 2026)
ECHA (March 2026): RAC final opinion and SEAC draft opinion on the proposed EU-wide PFAS restriction under REACH, which has not been adopted into law

Swap Smart ✅

❌ Microwave popcorn bag → ✅ Kernels air popped in a pot. Same snack, no coated bag ❌ Eating straight from a grease-resistant takeout box → ✅ Move it to a plate first ❌ Unfiltered tap water in a known PFAS area → ✅ A filter certified to NSF/ANSI 53 or 58

The Dirty List

These are the processed ingredients that show up in everyday products, in your food, your air, and on your skin. What they are, where they hide, what the research says, and what you can use instead. No fear. Just facts.

Harmful Ingredients

PFAS (Forever Chemicals)

Description: