1. Gastric cancer is hereditary.
The incidence of gastric cancer is very high in China, especially in the northwest and other regions, and there is a phenomenon of family aggregation of gastric cancer. If there are patients with gastric cancer in the family, the incidence of gastric cancer in the immediate family is 2 ~ 3 times higher than that in the general population. The occurrence of gastric cancer is related to the changes of some genetic factors. Although the role of genetic factors is not as important as colorectal cancer, the family history of gastric cancer may still be a risk factor. However, gastric cancer is not a genetic disease, and genetic factors do not play a very important role in the occurrence of gastric cancer. the main reason for family aggregation is that families have similar dietary and environmental factors.2. Gastric cancer is not contagious.Gastric cancer is not an infectious disease and will not be transmitted through intimate contact in daily life. However, some people may still ask, why do some families have more than one stomach cancer patient? The relative aggregation of tumorigenesis in this family is not caused by infection, but is mainly related to heredity and common carcinogenic factors. Gastric cancer cannot be transmitted directly, but because gastric cancer is related to the infection of certain bacteria (such as Helicobacter pylori) and viruses (such as EB virus), and these bacteria or viruses that can cause pathological changes in gastric mucosa can be transmitted, but it is not certain that gastric cancer will occur if these bacteria or viruses are infected.
