Easily hungry is not a precursor of cancer. Easily hungry may be caused by physiological reasons, digestive system diseases, hyperthyroidism, diabetes and other factors. 1. Physiological reasons: If you are in puberty and have a good mental state, you will often show increased meal size and hyperdigestion, which will lead to easy hunger. In addition, if you eat less or exercise more, it is easy to consume body heat, resulting in easy hunger. 2. Digestive system diseases: If the patient suffers from digestive system diseases, the gastrointestinal tract’s digestion and emptying function will be accelerated, resulting in easy hunger. 3. Hyperthyroidism: If the patient has a sudden increase in appetite, easy to be hungry, accompanied by increased activity and abnormally active, etc., then it is considered to be hyperthyroidism. 4. Diabetes mellitus: Due to the poor control of blood sugar, it may lead to an increase in the amount of appetite, the phenomenon of frequent hunger, and accompanied by thirst, polyuria and other symptoms. Patients who are prone to hunger are advised to go to the hospital as soon as possible to find out the cause and give treatment to avoid delaying their condition.