Glutathione Peroxidase: An Antioxidant Enzyme In Health And Disease Selenium is a vital trace mineral that quietly supports some of the body's most essential functions, yet it's often overlooked. If you're taking a high quality multivitamin, you may be getting some selenium. The Factors Affecting Plasma Glutathione Peroxidase and Selenium in Rheumatoid Arthritis: A Multiple Linear Regression Analysis Selenium content and glutathione peroxidase activity in the plasma and erythrocytes of non pregnant and pregnant women. Glutathione Peroxidase 1 in Health and Disease: From Molecular Mechanisms to Therapeutic Opportunities Edith Lubos, Joseph Loscalzo, Diane E. Handy, 2011