Every person tested in the United States has been found to have PFAS in their bloodstream. This fact is concerning because even small amounts of PFAS in the body can lead to severe health problems. Credit: Francesco Scatena/Adobe Stock Every person tested in the United States has been found to have PFAS in their bloodstream. This fact is concerning because even small amounts of PFAS in the body can lead to severe health problems. Credit: Francesco Scatena/Adobe Stock

Per- and polyfluoroalkyl substances, or PFAS, are known as "forever chemicals" because of their resistance to breaking down over time. These artificially produced chemicals were created in 1946 when DuPont introduced nonstick cookware coated with a substance called Teflon.

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