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 Best Glutathione Supplement 4 Recommendations in 2026 Glutathione is known as the master antioxidant. This critical compound protects cells from damage caused by free radicals and toxins, supports detoxification, plays a key role in DNA synthesis and repair, Glutathione: A Master at Work for You WellCome Om Integral Healing & Education Center