What You Eat Drives Your PFAS Blood Levels

Every single one of 630 Swiss adults tested in a 2026 study had detectable PFAS in their blood. PFOS, PFOA, and PFHxS were found in 100% of participants. But what separated people with high PFAS from people with lower PFAS? Mostly what they ate. The study, published in Environment International, identified diet as a key driver of PFAS body burden.

What the Research Found

Researchers measured 30 PFAS compounds in 630 adults and linked the results to 36 lifestyle and dietary variables. The patterns were clear. Fish consumption drove PFAS levels up, especially salmon and local freshwater fish. A meat-focused western diet was also linked to higher PFAS. Plant-based and dairy-focused diets correlated with lower PFAS levels.

Alcohol and use of ski wax or waterproofing sprays were also associated with higher PFAS. Age and male sex were the strongest overall determinants, likely because PFAS accumulates over a lifetime and women excrete some during pregnancy and breastfeeding.

What You Can Control

You can't avoid PFAS entirely. But you can reduce how much you add each day. Diet matters. So does what your food touches before you eat it. Nonstick pans release PFAS into food during cooking, adding to whatever PFAS is already in your food. That's a daily exposure you can eliminate.

Stainless steel and cast iron don't use PFAS coatings. Glass and stainless steel food storage don't contaminate food that touches them. Browse non-toxic kitchen alternatives to replace the cookware and containers that add PFAS to every meal.

Also see glass food containers for safer alternatives.

Source: Riou J, Fragnière Rime C, von Goetz N, Nussle SG, Jaus A (2026). Environ Int.