If you imagine the human body as a car engine and vitamins as the pistons, you could say that you have a fairly profound understanding of the effects of these miraculous trace food substances on the human body.
Vitamins regulate the body's metabolic functions through enzyme systems.
A lack of any vitamin can endanger the entire body.
Vitamins are the constituent elements of the body's enzyme systems. The enzyme system is like the ignition device of a car's pistons—promoting and regulating the body's metabolism, enabling various parts of the body to function effectively, and maintaining the body in its optimal state.
Compared with other nutrients such as proteins, fats, and carbohydrates, the intake of vitamins (even when taken in large amounts for therapeutic purposes) is very small. A lack of any vitamin can endanger the entire body.