Hunger and not wanting to eat is due to indigestion, fatty liver, gastric ulcer, etc. The appearance of indigestion is directly related to the lack of digestive juice secretion. These people will stay in the stomach after eating food because the food cannot be digested and emptied in time. With the aggravation of the disease the digestion of food by the intestines and stomach will gradually decrease, so the patient will be accompanied by a loss of appetite, even in the hospital when they do not want to eat. When fatty liver aggravates, the liver’s function of metabolizing fatty substances will be affected, and many patients with fatty liver will have nausea, vomiting and loss of appetite performance. Patients with fatty liver often have aversion to greasy food when they see greasy food, and they do not want to eat such food even when they are hungry. Patients with gastric ulcers often experience abdominal pain after meals, and many people mistake abdominal pain for hunger, but the presence of food in the stomach and the fear of eating causes pain, so they do not want to eat.