blog posts PFAS exposure linked to teen weight regain after bariatric surgery Sep 1, 2025 9:00 am by Joy ScrogumContaminantsSource: HealthDay, 8/19/25For adolescents, exposure to perfluoroalkyl and polyfluoroalkyl substances (PFAS) is associated with weight regain after bariatric surgery, according to a study published online Aug. 14 in Obesity.