Antioxidants speed the rate of chemical reactions. damage cell membranes. promote the formation of free radicals donate electrons to free radicals.
Free radicals interact with and are neutralized by antioxidants, stopping them from doing harm. Another name for antioxidants is "free radical scavengers."
Free radicals and other reactive oxygen species (ROS) are produced by the body's regular, vital metabolic activities or by external factors such exposure to X-rays, ozone, tobacco smoke, air pollution, and industrial toxins.
The cellular membrane is damaged by the ROS-induced peroxidation of polyunsaturated fatty acids in the bilayer of the cell membrane, which sets off a chain reaction of lipid peroxidation. This results in further membrane lipid and protein oxidation.
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