A heart-healthy diet includes key characteristics such as a high intake of fruits, vegetables, whole grains, and lean proteins, while minimizing saturated and trans fats, sodium, and added sugars. Essential fatty acids from sources like nuts, fish, and olive oil are encouraged. Prioritizing fiber-rich foods contributes to heart health by lowering cholesterol levels. Moderation and balance are fundamental, as is staying hydrated and limiting processed foods. Regular meal planning can support adherence to these guidelines.