Does oxygen cause free radicals?
While oxygen is critical to all oxygen breathing organisms, oxygen also produces free radicals as a by-product of normal oxygen metabolism. Fortunately, the body produces protective free radical fighting enzymes; glutathione, catalase and sodium oxide dismustase to neutralize the majority of this activity and additional dietary and supplemental antioxidants are also recommended. There is no evidence that oxygen treatments cause free radical damage; in fact most scientists and physicians argue that even if topical oxygen could penetrate the skin it would be such an insignificant amount; basically no more than your daily exposure to oxygen.
