The diet of eating only vegetables for dinner and not eating is not scientific and will lead to malnutrition in the long run, because the maintenance of the normal functions of the organs of the body and the normal functioning cannot be supported by the intake of various types of balanced nutrients. Although vegetables contain a variety of nutrients, vitamins and dietary fiber, to meet the body’s needs for vitamins and inorganic salts. But the normal functioning of the body’s organs requires carbohydrates to participate, and carbohydrates need to be obtained through rice, steamed buns and other staple foods. Not eating staple foods for a long time will cause the body to suffer from insufficient carbohydrate intake, and thus the body will suffer from a series of problems, such as causing lower immunity and resistance, and increasing the risk of cardiovascular disease, diabetes, and fatty liver and anorexia. Long-term dinner only eat vegetables, not only will not lose weight, but also can lead to obesity and cause memory loss.