Glutathione: Source, Supplementation and Side Effects 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 Abbott Family Chiropractic Glorious Glutathione: How One Antioxidant Can Help Everything from Parkinson's Disease to Autism, Asthma, Chronic Fatigue, Lyme Disease, Diabetes and Heart Disease Kindle edition by Dr. Christopher Calapai, 2by2host.com, Jill Neimark. Glutathione & Diabetes: How the Body's Master Antioxidant Glutathione Deficiency: Are You At Risk?