14 Glutathione Benefits for Your Body and Health Annex Naturopathic Clinic 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 Glutathione in Our Diet and Its Role in the Body: From Disease Prevention to Anti Aging[v1] Preprints.org How to Take Glutathione Effectively: Dosage & Tips