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 Frontiers Glutathione: A Samsonian life sustaining small molecule that protects against oxidative stress, ageing and damaging inflammation Antioxidant Potential of Glutathione and Crosstalk with Phytohormones Encyclopedia MDPI Yeast mitochondrial glutathione is an essential antioxidant with mitochondrial thioredoxin providing a back up system ScienceDirect