Briefly describe the relationship between body composition and health?

There are six nutrients in human body: protein, water, inorganic salts, carbohydrates, fats and vitamins. Among them, protein, fat and carbohydrate are the three hot nutrients of human body, which mainly provide energy consumed by people every day. Other nutrients maintain the normal operation of the body, such as lack of vitamin A, which can make people suffer from night blindness. Many, many, many nutrients have a far-reaching impact on the human body, and it is not clear in one or two sentences. It will be clear if a small part is missing.