Glutathione is often called the body's master antioxidant, but most people don't really understand what it does. It plays a central role in protecting your cells from damage, supporting detox pathways, and The Relationship Between Oxidative Stress, Selenium, and Cumulative Risk in Metabolic Syndrome In Vivo Because glutathione levels decline as you age, and glycine can help slow the glutathione slide, it's a good idea to keep your levels high by eating protein rich foods, like organic poultry, grass fed Glutathione S Transferase Polymorphism Interactions with Smoking Status and HPV Infection in Cervical Cancer Risk: An Evidence Based Meta Analysis PLOS One Is glutathione safe?