Food rich in glutathione: broccoli, cauliflower, banana, spinach, carrot, orange, avocado, onion, nuts. Glutathione is an antioxidant; helps make proteins in the body; has a variety of health benefits Stock Photo Glutathione: The Ultimate Antioxidant for Your 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 Natural Ways to Increase Your Glutathione Levels 10 Foods That Contain Glutathione Core Med Science How to increase glutathione levels: 4 natural ways