In human nutrition, empty calories are those calories found in foods and beverages (including alcohol)[1] composed primarily or solely of calorie-rich macronutrients such as sugars and fats, but little or no micronutrients, fibre, or protein. [2] Foods composed mostly of empty calories have low nutrient density, meaning few other nutrients relative to their energy content.[3] Empty calories are more difficult to fit into a diet that is both balanced and within TDEE, and so readily create an unhealthy diet.[4]