No lunch is noon after lunch, to the next day before breakfast time period no longer eat, generally in special circumstances, such as eating too much lunch, for some reasons after lunch, frequent vomiting, diarrhea and other symptoms, once in a while, no lunch is good for reducing the burden on the gastrointestinal tract. However, if there is no special circumstances, not eating after lunch can do more harm than good, long-term not eating after lunch may cause malnutrition in some people, metabolic decline, increased risk of obesity, sleep disorders, induced digestive diseases, abnormal fluctuations in blood sugar and other problems. 1, malnutrition: prolonged not eating after lunch will reduce the body’s daily dietary intake, resulting in malnutrition in the human body, affecting the normal Work and life; 2, metabolism decline: general normal people three meals a day, the body needs the energy required by each meal intake and reach, and long-term noon may lead to noon intake of energy is not enough to maintain the afternoon, evening normal learning, work, life, etc., will seriously cause the body’s metabolism to slow down; 3, increase the risk of obesity: although noon is superficially conducive to weight loss, but long-term noon may not eat. But long-term noon may affect the balance of each meal, resulting in breakfast, lunch intake increased, even more than the body’s total daily caloric needs, and thus increase the risk of obesity; 4, sleep disorders: noon may make bedtime in a state of hunger, the body in hunger will be frequent intestinal sounds. Frequent bowel sounds and hunger may affect sleep, and affect the quality of sleep; 5, induce digestive system diseases: long-term noon meal process, the body is in a fasting state, so the stomach secretion of gastric acid can not act on food, and the bile secreted in the gallbladder is not stimulated by food, in the long run may increase the occurrence of peptic ulcers, biliary stones, cholecystitis and other digestive system diseases; 6. Abnormal blood sugar fluctuations: Patients with diabetes or unstable blood sugar status do not eat after lunch and are prone to hypoglycemia, which is not conducive to disease control and effective treatment.