Glutathione is an important antioxidant in your body. In fact, it’s called the Master antioxidant. In other words, it combats free radicals. Free radicals damage your body's cells. Glutathione plays a role in many chemical reactions in your body including but not limited to: reduces oxidative stress, may improve psoriasis, may reduce damage to cells in individuals with fatty liver disease, improve insulin resistance in older individuals, increase mobility in people with peripheral artery disease, reduce symptoms of Parkinson's disease, may help fight against autoimmune disease, may reduce oxidative stress in children with autism, and may reduce the impact from uncontrolled diabetes. Glutathione is known to help with detoxification as well.