A food is considered nutrient-dense when it provides a high amount of essential nutrients relative to its calorie content. Such foods are rich in vitamins, minerals, fiber, and other beneficial substances while being relatively low in added sugars and unhealthy fats. Examples include fruits, vegetables, whole grains, lean proteins, and legumes. Consuming a nutrient-dense diet supports overall health, aids in weight management, and can improve energy levels. It is an essential component of a balanced eating pattern for long-term health and well-being.