Glutathione is a powerful antioxidant produced naturally by the body. Composed of three amino acids (glutamine, cysteine, and glycine), it plays a key role in reducing oxidative stress by neutralizing harmful free radicals. Glutathione supports immune function, and detoxification processes, and is vital for maintaining cellular health. Its levels in the body can be affected by factors like aging, poor nutrition, and stress, making supplementation and dietary choices important for maintaining its optimal levels.