If you always want to eat, it may be caused by the following reasons: First, there may be a psychological disorder, such as bulimia nervosa, bulimia patients are prone to always love to eat, and even overeating, overeating after the emergence of remorse, there will be a series of behaviors such as diarrhea, vomiting. Second, may also be caused by hyperthyroidism, hyperthyroidism patients have a faster metabolism, consumption is relatively large, it is easy to cause always hungry, always eat, and weight loss. Third, it may be caused by diabetes, the typical symptoms of diabetic patients are three high and one low, that is, drinking more, eating more, urinating more, weight loss, because diabetic patients have some abnormal insulin secretion, such as insulin resistance problems, this time for the absorption of energy problems, it is easy to become always want to eat, but also weight loss.