The body's cells face significant daily stress from pollution, stress, unhealthy dietary habits, and even natural physiological processes within the body. One of the most dangerous of these effects are free radicals - unstable molecules that can cause cellular damage when they accumulate in large quantities. This is where the crucial role of antioxidant vitamins comes into play, serving as a primary defense line protecting the body from this damage. Antioxidants work to neutralize free radicals and prevent them from causing harm to cells and tissues. Among the most well-known vitamins in this field are Vitamin C, Vitamin E, and Vitamin A (beta-carotene). Each of these vitamins has a different role, but they all share in common the protection of cells and enhancement of the body's ability to combat oxidative stress. Vitamin C is considered one of the most powerful antioxidants, helping to strengthen the immune system and contributing to collagen production that maintains healthy skin and blood vessels. Vitamin E is crucial in protecting cell membranes from damage and has a clear role in supporting heart health and nerve tissues. Meanwhile, Vitamin A works to maintain eye health and also contributes to cell regeneration and immune system support. Obtaining these vitamins doesn't always require dietary supplements, as many of them are available in natural foods such as citrus fruits, nuts, vegetable oils, leafy greens, and carrots. Maintaining a balanced diet rich in these elements reduces the impact of free radicals and better preserves the body's vital functions. Numerous studies have proven that antioxidants play an important role in reducing the risk of chronic diseases such as heart disease, some types of cancer, and diabetes, as they reduce oxidative stress which is a significant factor in the development of these conditions. In conclusion, antioxidant vitamins remain an essential part of body protection. Adopting a healthy lifestyle based on balanced nutrition helps enhance the body's natural defenses and contributes to maintaining cellular health in the long term. Al-Mustaqbal University - Ranked First Among Iraqi Private Universities