Glutathione, A Powerful Antioxidant Indigo Health 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 Antioxidant Rich Foods to Grow for Immune Health Glenside, PA Natural Ways to Boost Your Glutathione Levels (Without Expensive Supplements)