A healthy diet refers to a balanced and nutritious eating plan that helps maintain good overall health, prevent chronic diseases, and support physical fitness. It typically includes a variety of fruits, vegetables, whole grains, lean proteins, and healthy fats while limiting the intake of unhealthy foods such as processed snacks, sugary drinks, and excessive amounts of saturated or trans fat. Adopting a healthy diet can help reduce the risk of obesity, heart disease, type 2 diabetes, and other chronic conditions while promoting energy, mental clarity, and overall well-being.