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 Do You Have a Glutathione Deficiency? Glutathione: What It Is, Why You Need It, How You Can Increase It The Amino Company Glutathione system enhancement for cardiac protection: pharmacological options against oxidative stress and ferroptosis Cell Death & Disease Glutathione & Diabetes: How the Body's Master Antioxidant High Absorption Liposomal Glutathione