To prevent chronic diseases, nutritional changes should focus on incorporating whole, nutrient-dense foods like fruits, vegetables, whole grains, and healthy fats. A diet rich in antioxidants, such as those found in berries and green leafy vegetables, can combat oxidative stress linked to disease. Reducing the intake of saturated fats, sugars, and processed foods while increasing fiber can also support heart health and better metabolic function. Staying hydrated and moderating alcohol consumption further contributes to long-term health and wellness.