Antioxidants are natural or synthetic substances that help protect the body’s cells from damage caused by harmful molecules called free radicals. Free radicals are produced during normal body processes and can also result from pollution, smoking, stress, and unhealthy diets. Antioxidants neutralize these molecules, reducing oxidative stress and supporting overall health. Common antioxidants include vitamins C and E, beta-carotene, selenium, and plant compounds such as flavonoids. They are found in fruits, vegetables, nuts, seeds, and whole grains, and play an important role in maintaining a healthy immune system and reducing the risk of various chronic diseases.
