PFOA, also known as perfluorooctanoic acid, is a synthetic chemical that has been used in a variety of industrial and commercial applications. It is a key ingredient in the manufacture of Teflon, a non-stick coating used in cookware and other products. PFOA has also been used in the production of firefighting foams, stain-resistant coatings for carpets and clothing, and other products.

Despite its widespread use, PFOA has been linked to a range of serious health problems in both humans and animals. Studies have shown that PFOA can cause developmental and reproductive harm, liver damage, and cancer. In particular, PFOA has been linked to an increased risk of testicular and kidney cancer.