Numerous studies have demonstrated the carcinogenic and noncarcinogenic health effects of many PFAS . Out of 9000 PFAS, PFOA (Perfluorooctanoic acid) and PFOS (Perfluorooctane sulfonic acid) have been the most studied and have received most of the attention in the media and from regulators, while other PFAS are less studied with the research about their health effects emerging and associated regulatory policies evolving .