Frequent hunger may be caused by physiological reasons, peptic ulcer, hyperthyroidism, diabetes and other reasons. 1. Physiological reasons: If you usually have smaller meals, eat less food or often eat some food that is particularly easy to digest, you may experience frequent hunger, which is a normal physiological phenomenon. 2. Peptic ulcer: when the patient suffers from peptic ulcer, it will easily lead to excessive secretion of gastric acid, promote intestinal peristalsis, and the phenomenon of frequent hunger. 3. Hyperthyroidism: If the patient has hyperthyroidism, it will easily lead to excessive secretion of thyroid hormones, increase the body’s metabolism and sympathetic nerve excitement, frequent hunger, irritability and other symptoms. 4. Diabetes: when patients with diabetes, easy to lead to insulin deficiency or insulin insensitivity, resulting in impaired utilization of sugar, can not provide energy, the phenomenon of frequent hunger. Frequent hunger to rule out physiological causes, patients should go to the hospital in a timely manner, clear causes under the guidance of the doctor active treatment.