SELENIUM: ANTI OXIDANT, ANTI CARCINOGEN AND IMMUNE SYSTEM BOOSTER Role of Selenium Dependent Glutathione Peroxidases (Seleno GPxs) in Radio Modulation: Lessons for Radiation Oncology Biological Trace Element Research Springer Nature Link The Selenoprotein Glutathione Peroxidase 4: From Molecular Mechanisms to Novel Therapeutic Opportunities Selenocysteine muscle pain ** **A lack of selenium cause muscle pain mechanism of action.** Selenium exerts its biological functions via molecules called selenoproteins which contain the amino acid cysteine with Selenium Utilization by GPX4 Is Required to Prevent Hydroperoxide Induced Ferroptosis: Cell