A substance that works to slow or prevent the generation of free radical molecular groups in the body, thereby protecting against degenerative cell damage associated with oxidative stress.
A substance (such as vitamin E, vitamin C, or beta carotene) that protects body cells from oxidation damage.
An antioxidant is something that prevents a chemical process called oxidation. This is when oxygen molecules can join with another chemical. Oxidation damage to body cells can cause gene changes (mutations) that can lead to cancer. So antioxidants may help to prevent cancer from developing. You can get antioxidants in your diet from fruit and vegetables, and other healthy foods. Vitamins A, C and E are antioxidants. The mineral selenium is also an antioxidant.