Glutathione Peroxidase: An Antioxidant Enzyme In Health And Disease Association between Polymorphisms in Glutathione Peroxidase and Selenoprotein P Genes, Glutathione Peroxidase Activity, HRT Use and Breast Cancer Risk PLOS One 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 Depletion and Stalwart Anticancer Activity of Metallotherapeutics Inducing Programmed Cell Death: Opening a New Window for Cancer Therapy ACS Omega Glutathione metabolism in cancer progression and treatment resistance Journal of Cell Biology Rockefeller University Press