99% Of People Have More Than 1 PFAS In Their Blood, Study Shows

PFAS stands for per- and polyfluoroalkyl substances, encompassing a class of over 15,000 synthetic fluorinated compounds. The earliest, perfluorooctanoic acid (PFOA), entered large-scale manufacturing in the late 1940s. Many of the properties of PFAS—nonstick, waterproof, heat-resistant—made them useful for cookware coatings, firefighting foams, and industrial applications.