Loss of appetite has more causes and requires vigilance against stomach and liver diseases. Loss of appetite may also be due to non-organic diseases such as mental factors. If there are stomach diseases, such as gastritis and gastric ulcer. This leads to gastrointestinal dysfunction, slowing down gastric emptying and not being able to digest the food in time. This causes discomfort such as bloating and may cause loss of appetite. There may also be diseases of the liver, such as hepatitis, which cause damage to liver cells to reduce bile secretion and decrease the ability to digest fat and protein. Loss of appetite may also occur. Loss of appetite may also be psychological, physical stress, often stay up late, etc., may lead to temporary loss of appetite, generally as long as the mood is relieved, adequate rest, will return to normal appetite. In addition, if a woman’s sudden loss of appetite may also be caused by pregnancy, it is recommended to consult a doctor in a timely manner, follow the doctor’s instructions for further examination, with the help of the doctor to clarify the cause, and targeted treatment or therapy.