Glutathione is a powerful antioxidant produced naturally in the body necessary for maintaining a youthful appearance and overall well being. The body's glutathione production naturally declines with age. Certain foods may help boost Glutathione for Food and Health Applications with Emphasis on Extraction, Identification, and Quantification Methods: A Review Optimization of selenoprotein P and other plasma selenium biomarkers for the assessment of the selenium nutritional requirement: a placebo controlled, double blind study of selenomethionine supplementation in selenium deficient Chinese subjects1234 Protective effects of selenium on : Human & Experimental Toxicology