Keck School of Medicine of USC Nov 22 2024 Evidence is mounting on the health problems linked to per- and polyfluoroalkyl substances (PFAS), a group of manufactured chemicals used in consumer products that accumulate in the body and take a very long time to break down. These substances increase risk for a number of medical concerns, including cancer, liver damage and fertility issues. In a study funded in part by the National Institutes of Health and the USC President's Sustainability Research