There is no clear-cut factor that causes stomach cancer, but many factors will increase the chance of stomach cancer, including congenital factors, acquired factors and so on. 1. Innate factors: the occurrence of stomach cancer may be related to genetic factors, such as parents, siblings and other immediate family members suffering from stomach cancer, which will increase the risk of stomach cancer. 2. Acquired factors: patients with positive H. pylori antibody are more likely to develop stomach cancer than those with negative antibody. In addition, if you often eat foods high in salt such as smoked, pickled, processed meats, salty and moldy foods, etc., it may also increase the incidence of stomach cancer. 3. Other factors: patients with stomach diseases such as atrophic gastritis, gastric polyps and gastric ulcer have higher incidence of stomach cancer than normal people. Warm reminder: There are no clear factors that cause stomach cancer. The incidence of stomach cancer is higher in patients with family history of stomach cancer, Helicobacter pylori infection, frequent consumption of moldy and pickled food, or patients suffering from certain stomach diseases. Therefore, patients should eat more fresh vegetables and fruits; patients with H. pylori infection should undergo timely eradication treatment; and high-risk groups should undergo regular gastroscopy. In addition, if you have acid reflux, heartburn, epigastric pain, nausea, vomiting and other discomforts, you should consult a doctor in time.