SciELO Brasil Catalytic application of selenium and tellurium compounds as glutathione peroxidase enzyme mimetics Catalytic application of selenium and tellurium compounds as glutathione peroxidase enzyme mimetics Glutathione Peroxidase: An Antioxidant Enzyme In Health And Disease Selenium Supplementation Improves Glutathione Peroxidase Activity in Alzheimer's Patients Natural Health Research Selenium is one of the few nutrients that directly controls how your body handles oxygen at the cellular level. Every time your cells produce energy, they generate peroxides as a byproduct. That Selenium and Selenoproteins: Mechanisms, Health Functions, and Emerging Applications