Early stage gastric cancer is treated well. How to detect stomach cancer as early as possible? Are there any manifestations that can indicate that we have early stage stomach cancer? Unfortunately, most patients with early gastric cancer do not feel any discomfort, while a few have stomach discomfort and poor appetite. The most reliable method to detect early gastric cancer is gastroscopy. When is a gastroscopy necessary to detect early gastric cancer? The older you are, the more likely you are to develop cancer. In China, the incidence of gastric cancer is low under 40 years old, and the incidence of gastric cancer increases significantly in people over 40 years old. Not all people over 40 years old need gastroscopy. It is recommended that those who are at high risk over 40 years old go for gastroscopy screening. Who are the high-risk groups for gastric cancer? 1) Those who have H. pylori infection; 2) Those who have had gastric ulcer, gastric polyp, atrophic gastritis, remnant stomach, hypertrophic gastritis, pernicious anemia and other precancerous lesions of the stomach; 3) Those whose parents, children and siblings have gastric cancer; 4) Those who have bad habits such as long-term smoking, heavy alcohol consumption, especially hot food, pickled and barbecued food, and high salt food