Antioxidants are substances that protect the body from damage caused by free radicals, which can contribute to cellular aging and various diseases. Naturally found in fruits, vegetables, and whole grains, antioxidants play a crucial role in reducing the risk of chronic conditions, such as heart disease and cancer. By neutralizing free radicals, they support immune function and promote overall well-being. Consuming a diet rich in antioxidants can aid in maintaining health and enhancing longevity.