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 Most Important Disease Preventing Molecule Elissa Goodman How to increase glutathione levels: 4 natural ways 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 Indian Sources of Natural Glutathione: Foods and Herbs for Optimal Health