Antioxidants or free-radical scavengers are known to neutralize free radicals. These free radicals are aggressive compounds that occur in some metabolic processes and in energy production. They are important for defense reactions in the body, but can also damage your DNA, cell membranes and proteins.

Some important antioxidants are vitamins E and C, carotenoids, selenium, zinc, manganese, copper, various enzymes, coenzyme Q10, polyphenols, etc.