Foods considered nutrient-dense are those that provide a high proportion of essential nutrients relative to their caloric content. Examples include leafy greens, colorful vegetables, lean proteins, whole grains, and certain fruits like berries. These foods are rich in vitamins, minerals, fiber, and antioxidants while being lower in added sugars and unhealthy fats. Nutrient-dense foods support overall health and wellness by fulfilling the body’s nutritional needs without excessive calorie consumption, making them crucial for weight management and optimal functioning.