Majid Koozehchian, M.S.The antioxidant N-acetylcysteine (NAC), a modified form of essential amino acid cysteine, which is both consumed in high-protein food and synthesized in the body, does not receive much attention but has important, positive impacts in the body (1). This antioxidant is a precursor to glutathione (the master antioxidant) in the body, and is readily metabolized into intracellular glutathione.   Following are some benefits reported for NAC:  NAC protects th...