Is Glutathione the Master Antioxidant? Heres What Science Says Why is Glutathione the Key to Gut Health? Brain health depends on balance. From energy production to antioxidant protection and immune regulation, multiple systems work together to support how the brain functions. Glutathione plays a central role in maintaining NAC and Glutathione: The Amino Acid the Supplement Industry Is Not Telling You About Antioxidant function of glutathione. GST: glutathione transferase; Download Scientific Diagram