Gastrointestinal digestive dysfunction will lead to human body wasting, the causes of wasting are as follows: 1, gastrointestinal dysfunction, is also the old people talk about gastrointestinal neurosis, mainly due to gastrointestinal motility and secretion dysfunction caused by the disease, usually and emotion also has a certain relationship. Due to gastrointestinal insufficiency, it may lead to poor digestive function, so usually there will be nausea, anorexia, diarrhea and other clinical manifestations. Because nutrient absorption is mainly through the intestinal tract, if the gastrointestinal insufficiency, the whole absorption function becomes poor will lead to the patient to lose weight. 2, gastrointestinal dysfunction, also often called gastrointestinal syndrome, part of the patient’s onset of the cause of the disease and the nerve, psychological factors have a relationship. Due to gastrointestinal dysfunction, food absorption is impaired, resulting in loss of appetite and weight loss.3. Gastrointestinal dysfunction leads to the normal function of the patient is impaired, so many nutrients can not be digested by the gastrointestinal tract, absorption, resulting in long-term malnutrition, which may ultimately lead to wasting of the body.