Glutathione & Glutathione Reduced Metabolics Eat These Foods to Increase Glutathione in Your Body Vitality Medical Wellness Center What Is Glutathione? Health Benefits, Risks, and More As I mention in my book, N acetyl cysteine (NAC) is not found in food sources, but in the body, it converts into cysteine. NAC acts as a precursor to glutathione, a powerful Sulfur rich foods support glutathione,an intracellular antioxidant that helps cells detoxify. #plantbased