Which foods have the highest PFAS?

Foods Most Likely to Contain High Levels of PFAS

When it comes to invisible contaminants in our food, PFAS—often called "forever chemicals"—are raising growing concern. These synthetic compounds don’t break down easily and can accumulate in the body over time, potentially leading to health issues. While they’re found in various consumer products, one of the most direct routes of exposure is through diet.

Seafood, especially shellfish and freshwater fish, tops the list when it comes to PFAS content. These animals absorb the chemicals from polluted water and sediment, concentrating them in their tissues. Fish caught near industrial sites or areas with contaminated runoff are particularly at risk. Regular consumption of such seafood can significantly increase a person’s PFAS levels.

Dairy and eggs also make the list—but with an important caveat. Milk and eggs aren’t inherently high in PFAS; their contamination depends heavily on the environment in which the animals are raised. If cows graze on land irrigated with PFAS-laden water or hens are fed contaminated feed, the chemicals can transfer into milk and eggs. Regions near manufacturing plants, military bases, or wastewater treatment facilities often report higher levels in these foods.

While regulations are still catching up, consumers can take steps to reduce exposure. Opting for seafood from cleaner, well-monitored sources and choosing dairy and eggs from farms that test for environmental contaminants can help. Awareness is key: knowing where your food comes from may be one of the best defenses against these persistent pollutants.