Nutrients considered "empty calories" primarily include added sugars and unhealthy fats that provide energy but lack essential vitamins and minerals. Common sources of empty calories are sugary beverages, processed snacks, and fast food. Consuming these can lead to weight gain and nutritional deficiencies, adversely affecting overall health. Prioritizing nutrient-dense foods such as fruits, vegetables, whole grains, and lean proteins is crucial for providing the body with adequate nutrition and supporting a healthy lifestyle.