Being hungry but not wanting to eat may be a symptom of excessive mental stress, indigestion, gastritis and so on. 1. Excessive mental stress: when the patient is under excessive mental stress due to work or study, the autonomic nervous function in the body will be disturbed, and when the stomach is affected, the situation of not wanting to eat when hungry will occur. 2. Indigestion: For example, if you don’t pay attention to your diet, you often eat food that is not digested, which leads to slower peristalsis of the stomach and intestines. Coupled with the usual reduction in the amount of exercise, gastrointestinal peristalsis is insufficient, and food intake is stored in the stomach for a long time, which will cause indigestion. 3. Gastritis: If the patient does not pay attention to diet, often eat some stimulating and cold food, it is easy to cause abnormal secretion of gastric acid, nausea and abdominal distension, thus appearing to be very hungry, but can not eat to eat. Patients appear very hungry, but can not eat when the situation, there may be other causes, such as peptic ulcer, cirrhosis of the liver, digestive tract tumors, must be timely to identify the cause of the disease, and then adjust accordingly, targeted treatment.