Reasons for not being hungry while eating are generally considered to include gastric disorders, psychiatric factors, dietary factors, excessive fatigue, bad hobbies, and liver disease. 1. Gastric diseases: Patients with underlying gastric diseases, such as atrophic gastritis and dyspepsia, may suffer from loss of appetite or fullness after meals. 2. Mental factors: for example, high mental tension can cause gastric acid secretion to be adversely affected, resulting in transient loss of appetite; women, in order to maintain a slim figure, may also cause anorexia as a result of dietary restriction, resulting in a lack of appetite. 3. Dietary factors: for example, overeating causes excessive burden on the stomach and intestines, resulting in gastrointestinal dysfunction, which can also cause indigestion and loss of appetite. 4. Excessive fatigue: it can cause insufficient blood supply to the stomach lining, leading to a decrease in the stomach’s digestive ability, causing stomach fullness and lack of hunger. 5. Bad hobbies: such as smoking and drinking may cause damage to the gastric mucosa and taste buds, which may also affect appetite. 6. Liver disease: Hepatitis, liver cancer and cirrhosis can lead to impaired liver function and loss of appetite. There may also be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy.