Whole foods are minimally processed foods that are close to their natural state, such as fruits, vegetables, whole grains, nuts, and seeds. They contribute to health by providing essential nutrients, vitamins, minerals, and antioxidants that support overall bodily functions. Emphasizing whole foods in one's diet can help reduce the risk of chronic diseases, promote a healthy weight, and improve digestive health. This focus fosters a balanced and nutritious approach to eating.