Not wanting to eat nausea may be caused by indigestion, chronic gastritis, peptic ulcer and other factors, and may also be caused by women’s early pregnancy. 1. Indigestion: If you have irregular diet, unbalanced nutrition and overeating, it can cause slowing down of gastric peristalsis and reduced secretion of gastric juices, leading to nausea and vomiting, and loss of appetite. 2. Chronic gastritis: If the gastric mucosa is damaged by inflammation, it will affect the ability to digest, and then nausea, loss of appetite and other symptoms. 3. Peptic ulcer: peptic ulcer can lead to damage to the protective barrier of the gastric mucosa, affecting food digestion, resulting in nausea and vomiting, not wanting to eat. 4. Early pregnancy: The change of hormone levels in the body after early pregnancy can also cause the stomach to react accordingly, resulting in not wanting to eat and nausea. If the patient has this symptom, it is recommended to go to the hospital in time to identify the cause of the disease.