Glutathione metabolism in type 2 diabetes and its relationship with microvascular complications and glycemia 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 The Roles of Glutathione and Oxidative Stress in Diabetes and COVID 19 PDF) Changes in hepatic glutathione metabolism in diabetes