Why does the human body need vitamins?

Vitamins: It is an essential substance for human body. But the human body can't synthesize it by itself, and it must be obtained from food. Vitamins participate in many important biochemical processes in the human body.

The transformation of energy, protein and carbohydrate in human body is a natural protective agent for human body. Because it can resist oxidation. Vitamins can also be used as an enzyme.

Vitamins, also known as vitamins, are life-sustaining substances, organic substances necessary to maintain human life activities and important active substances to maintain human health. The content of vitamins in the body is very small, but it is indispensable. Although the chemical structures and properties of various vitamins are different, they have the following similarities:

① Vitamins exist in food in the form of provitamins;

Vitamins are not components of tissues and cells, do not produce energy, and mainly participate in the regulation of metabolism;

(3) Most vitamins can't be synthesized by the body or the synthetic amount is not enough to meet the needs of the body, so they must be obtained from food frequently;

(4) The human body's demand for vitamins is very small, and the daily demand is often calculated in milligrams or micrograms, but once it is lacking, it will cause the corresponding vitamin deficiency and cause harm to human health.