What is Glutathione? AgelessRx Glutathione is often called the body's master antioxidant for good reasonit helps detoxify, protect cells, and boost immunity. Supporting your natural levels starts with daily choices like eating sulfur rich foods (broccoli, garlic, Potential Role of Sulfur Containing Antioxidant Systems in Highly Oxidative Environments Frontiers The versatile utility of cysteine as a target for cancer treatment Sulfur metabolism mediated fungal glutathione biosynthesis is essential for oxidative stress resistance and pathogenicity in the plant pathogenic fungus Fusarium graminearum mBio