Glutathione is such an important antioxidant in human physiology, meaning it acts to combat oxidative stress. Strategies for increasing glutathione include: Consume sulfur rich foods like cruciferous vegetables Ensure you get Sulfur Element containing metabolic pathways in human health and crosstalk with the microbiome ScienceDirect Frontiers Redox regulation of enzymes involved in sulfate assimilation and in the synthesis of sulfur containing amino acids and glutathione in plants Catabolism of extracellular glutathione supplies cysteine to support tumours Nature What is Glutathione? GoldBio