The human body builds proteins and fats characteristic of it due to the products of food breakdown. The oxidation of fats and carbohydrates is the source of energy necessary for its vital functions.
When substances are broken down, the human body performs the following functions:
1) building (proteins, fats, carbohydrates);
2) energy (fats, carbohydrates);
3) catalytic (proteins);
4) protective (proteins).
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.