Nutritionists rationally prepare various dietary nutrients through different formulas and proportions to meet the needs of various human systems, but the so-called nutrition is non-nutrition, and it goes without saying that both normal people and healthy people are patients: most patients in morbid state are bound by so-called "nutrition", but they don't know that patients in morbid state are not only lacking some nutrients as we see, but also should see the mechanism and reasons behind this nutritional deficiency. The human body itself can balance various nutrients, so-called nutrition.