Often feel no appetite may be the environment hot, moody and other physiological factors, or may be chronic gastritis, hypothyroidism and other diseases. 1. Physiological factors: If the environment is hot, moody, stress, may lead to slow intestinal peristalsis, the appearance of no appetite. This is a normal phenomenon, and there is no need to worry. 2. Chronic gastritis: chronic gastritis is mostly considered to be caused by Helicobacter pylori infection, decreased immunity, medication, overeating and other factors. When the gastric mucosa inflammatory lesions, can lead to gastric mucosal congestion, the patient may appear loss of appetite, middle and upper abdominal discomfort, belching (hiccups), acid reflux and other symptoms. 3. Hypothyroidism: Hypothyroidism is mainly caused by autoimmune diseases, destruction of the thyroid gland, drugs, pituitary diseases, iodine deficiency and other factors. Patients may have symptoms such as loss of appetite, chills, fatigue, slow heart rate, etc., which may be characterized by a lack of appetite. There are many reasons for the lack of appetite, and it is recommended that patients go to regular hospitals in a timely manner to clarify the cause of the disease and follow the doctor’s instructions for treatment.