The problem of gastric cancer in China is more serious. China is a high incidence area of gastric cancer. In 2065, there were 405,000 new cases of gastric cancer, 438+04, accounting for 42.5% of the world. Moreover, due to insufficient attention to early screening, the mortality rate of gastric cancer is still very high, which is more than twice the world average.
The formation mechanism of gastric cancer is very complicated, which is influenced by environment, diet, heredity, immunity and other factors. The occurrence of gastric cancer is a continuous process with multiple causes and stages. It is generally believed that its pathogenic mode is: chronic gastritis-atrophic gastritis-intestinal metaplasia-atypical hyperplasia-gastric cancer. Helicobacter pylori infection will not directly cause gastric cancer, but almost 100% will destroy the normal structure and function of the stomach, thus becoming the "fuse" of gastric cancer. Therefore, Helicobacter pylori is listed as a carcinogen by the International Agency for Research on Cancer of the World Health Organization.