Antioxidants are compounds that combat oxidative stress in the body, which can damage cells. They neutralize free radicals that contribute to various health issues, including cancer and heart disease. Common antioxidants include vitamin C, vitamin E, and beta-carotene, often found in fruits and vegetables. Consuming a diet rich in antioxidants can support overall health by enhancing the immune system, reducing inflammation, and potentially delaying the aging process. Thus, integrating antioxidant-rich foods into one's diet is vital for maintaining long-term health.