Copper Zinc SOD, or Copper Zinc Superoxide Dismutase, is an important enzyme found in the body that helps protect cells from damage caused by free radicals. Free radicals are unstable molecules that can lead to oxidative stress, which is linked to various diseases and aging. This enzyme works by converting superoxide radicals into less harmful substances, thereby playing a crucial role in maintaining cellular health. This enzyme contains both copper and zinc as essential metal cofactors, which are necessary for its activity. Copper Zinc SOD is present in many tissues, including the liver and brain, and is vital for the body's antioxidant defense system. Its activity can be influenced by factors such as diet, age, and environmental stressors.