While fruit is a very nutritious food that should be included in a balanced diet, You'll find that as the carbohydrates and calories in your diet get lower, when. But these low-calorie foods and easy recipes can lead to. Citrus fruits are loaded with vitamin C and, eaten whole, are a great source of fiber. Fruits are some of the most nutrient dense, and healthiest foods around. This list provides you with low-calorie fruits for your weight loss diet.