OXIDATIVE STRESScan contribute to hypothyroid symptoms When the body has to deal with too much Oxidative Stress from inflammation, then the enzyme Glutathione Peroxidase [GPx] has to work overtime to inactivate damaging " Protection Against Oxidative Stress and IGF I Deficiency Conditions IntechOpen Non covalent interactions in the glutathione peroxidase active center and their influence on the enzyme activity Organic & Biomolecular Chemistry (RSC Publishing) Not all discoloration treatments work the same way , EXOPEEL is an advanced brightening treatment designed to help improve underarm and intimate area discoloration through a customized combination of Red blood cell glutathione peroxidase activity in female nulligravid and pregnant rats Reproductive Biology and Endocrinology Springer Nature Link