A new study examined associations between diet, drinking water, and ‘legacy’ PFAS — chemicals that were phased out of production in the US in the 2000s — with blood samples from California residents. PFAS exposure was associated with consumption of seafood, eggs, and brown rice, but fewer other foods than suggested by earlier studies. PFAS levels were elevated among people who lived in areas where these chemicals were detectable in their drinking water supply, but lower than levels found in highly contaminated communities.