Critical Roles of the CysteineGlutathione Axis in the Production of Glutamyl Peptides in the Nervous System Glutathione Synthase an overview ScienceDirect Topics Optimizing Brain Biology Through Near Infrared Induced Mitochondrial Melatonin Synthesis: A Hypothesis Paper Cureus Critical Roles of the CysteineGlutathione Axis in the Production of Glutamyl Peptides in the Nervous System 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 "