Do You Have a Glutathione Deficiency? Glutathione: What It Is, Why You Need It, How You Can Increase It The Amino Company Glutathione & Diabetes: How the Body's Master Antioxidant GPX1 (Glutathione Peroxidase, GSHPx) Gene Variants and Cardiovascular Revolution Health & Wellness 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