Functional foods are those that provide health benefits beyond basic nutrition, often containing bioactive compounds that promote well-being. Examples include foods like oats, which are high in beta-glucans for heart health, and fatty fish, rich in omega-3 fatty acids, which support brain health. These foods can also help reduce the risk of chronic diseases like obesity, diabetes, and cardiovascular conditions. Incorporating functional foods into the diet not only nourishes the body but also contributes positively to overall health and disease prevention.