Once the night is hungry with less meals, diabetes, hyperthyroidism, digestive tract diseases and other factors, as follows: 1, some people often sleep until the middle of the night when the phenomenon of abdominal hunger, mainly considered to be caused by dietary conditions. If you consume less food the night before, drink water or eat fruits and vegetables instead of the main meal during the diet, the phenomenon of abdominal hunger will easily appear at night. 2, diabetic patients will appear often hungry phenomenon, mainly because the cells are not able to use the glucose inside the blood, the diet intake of more sugar is not able to be used. 3, when the body appears hyperthyroidism gastrointestinal tract will also appear peristalsis 4. The common digestive tract diseases include inflammation and ulcers in the duodenum, and many patients tend to experience hunger at night due to inflammation and ulcers, and sometimes they are so hungry that they cannot sleep normally.