MedicalResearch.com Interview with: Ning Ding MPH, PhD candidate Sung Kyun Park Sc.D, MPH Associate Professor Department of Epidemiology University of Michigan School of Public Health Ann Arbor, MI 48109  MedicalResearch.com: What is the background for this study? Response: Per- and polyfluoroalkyl substances (PFAS), also known as ‘forever chemicals’, are a family of synthetic chemicals used in a wide variety of nonstick and waterproof products and firefighting foams. The main issue is that PFAS are everywhere. It has been estimated that 110 million Americans, 1 out of three, may consume drinking water contaminated with PFAS. PFAS are very persistent and once PFAS enter the body, they don't break down and build up in the body over time. (more…)