? Macronutrients include protein, lipids, and carbohydrates. Micronutrients include: minerals, vitamins. ?

Vitamin is a type of trace organic substance that humans and animals must obtain from food in order to maintain normal physiological functions. It plays an important role in human growth, metabolism, and development. Vitamins neither participate in the formation of human cells nor provide energy to the human body.

Vitamins are a class of organic compounds necessary to maintain good health. This type of substance is neither a raw material for body tissue nor a source of energy in the body, but a type of regulatory substance that plays an important role in substance metabolism. Since these substances cannot be synthesized in the body or are not synthesized in sufficient amounts, although they are needed in small amounts, they must be regularly supplied by food.

Vitamins are also known as vitamins. In layman’s terms, they are life-sustaining substances. They are a type of organic substances necessary to maintain human life activities and are also important active substances for maintaining 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 all exist in food in the form of provitamins;

② Vitamins It is not a component of body tissues and cells, nor does it produce energy. Its main role is to participate in the regulation of body metabolism;

③Most vitamins cannot be synthesized by the body or are not synthesized in sufficient amounts. To meet the needs of the body, it must be obtained regularly through food;

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