Antioxidants are a group of substances that prevent or slow down oxidative reactions in the body. They protect cells from the harmful effects of free radicals, which are formed as a result of oxidation. Free radicals are molecules with an unpaired electron that can damage cells, DNA, and proteins.

Examples of antioxidants include vitamin C, which helps restore vitamin E after it, vitamin E itself, coenzyme Q10, selenium, beta-carotene, and many others. They can be obtained from food or in the form of additional supplements.

Regular consumption of antioxidants can help reduce the risk of various chronic diseases, such as cardiovascular disease, diabetes, and certain types of cancer. They also help slow down the aging process and maintain overall health.