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Antioxidants are dietary nutrients that help prevent the cell and tissue damage caused by free radicals in the body. Free radicals are highly reactive, unstable molecules that cause oxidative stress and can lead to degenerative diseases such as cancer and arthritis.
Antioxidants fight oxidative stress by neutralizing free radicals. Naturally occurring fish oils contain good concentrations of vitamin E, which is a powerful antioxidant. In wild salmon, astaxanthin (as-tuh-zan'-thin), the pigment that gives the fish its rich red color is also a very powerful antioxidant.
Studies suggest that astaxanthin may be 100 times more powerful than vitamin E at quenching free radicals. This antioxidant is also thought to be 10 times more effective than other carotenoids, like beta-carotene.