The human diet consists of three main parts:
Carbohydrates: according to the correct principles of nutrition, 55% of a person’s daily energy consumption should be provided from these food sources. (Each gram of carbohydrate produces 4 kcal of energy)
Fats: provide 30% of a person’s daily food energy. Contains saturated and unsaturated fats.
(Each gram of fat produces 9 kcal of energy.)
Proteins: These substances provide up to 15% of a person’s daily energy, which are necessary to maintain the structure and function of many body organs.
(Each gram of protein produces 4 kcal of energy)
In addition to the macronutrients mentioned above, the diet consists of micronutrients including vitamins and minerals.