Foods High in Glutathione Dr. Christina Carlyle Because glutathione levels decline as you age, and glycine can help slow the glutathione slide, it's a good idea to keep your levels high by eating protein rich foods, like organic poultry, grass fed Eat These Foods to Increase Glutathione in Your Body Vitality Medical Wellness Center Glutathione is an antioxidant powerhouse that plays a crucial role in detoxifying our bodies and boosting immune function. If you're looking to enhance your glutathione levels, incorporating these glutathione rich foods into 7 Foods Rich In L Glutathione that You Must Eat NOW!