A large increase in appetite is seen in two main categories: First, a physiological increase mood, weather and exercise can have an impact. May be in a good mood to make a good appetite or increased exercise, resulting in more consumption needs will also increase. There is also cold weather, the body will consume more calories will also have a better appetite. Women’s pregnancy and breastfeeding, will also have a better appetite, eat more. 2, pathological increase 1, such as hyperthyroidism when the metabolism increases, there will be a good appetite, eat more, but not weight gain. 2, cortisolism, eat more, accompanied by full moon face, buffalo back, abdominal obesity, acne, etc. 3, diabetes due to glucose excretion from the urine, there are also symptoms of eating more, accompanied by polyuria, drinking more, weight loss. 4, there are some other consumptive diseases, infectious diseases may also have the above conditions.