Not eating carbohydrates has a greater impact on the body and may lead to abnormal blood sugar levels, cause anorexia or bulimia, and malnutrition. 1. Abnormal blood sugar levels: the essence of carbohydrates includes saccharides, and if you don’t eat carbohydrates it is very likely to lead to hypoglycemia in the frail. 2. Anorexia or bulimia: If carbohydrate-containing foods are not eaten for a long period of time, resulting in excessive loss of carbohydrates, the person’s appetite may be affected, leading to anorexia or bulimia. 3. Malnutrition: Carbohydrates are also one of the nutrients needed by the human body, long-term non-intake, excessive lack of will lead to weight loss, causing malnutrition. So every day to properly supplement the body needs carbohydrates, in addition to supplement protein, fat, vitamins, minerals, water, fiber and so on.