Antioxidants are compounds that help protect the body from oxidative stress and free radical damage. They neutralize harmful molecules, reducing the risk of chronic diseases such as cancer and heart disease. Common antioxidants include vitamins C and E, selenium, and flavonoids found in fruits and vegetables. Regular consumption of antioxidant-rich foods supports health by enhancing immune function, promoting skin health, and potentially slowing the aging process. This protective role highlights the importance of incorporating various colorful foods into the diet to maintain optimal health and well-being.