Is stomach cancer contagious? Generally, stomach cancer is not contagious

Helicobacter pylori infection is a common cause of gastric cancer. Helicobacter pylori is highly contagious, but gastric cancer is not contagious.

Gastric cancer is a malignant tumor disease. Generally, cancer is not contagious, and gastric cancer itself is not contagious; but many gastric cancer patients have a large number of Helicobacter pylori in their stomachs, which is also a common cause of gastric cancer. This bacteria is also contagious to a certain extent.
Helicobacter pylori exists in dental plaque and saliva. If you share tableware, eat together, kiss, etc. with a patient, you may be infected with Helicobacter pylori and develop stomach problems, but it will not directly transmit stomach cancer. If stomach problems caused by Helicobacter pylori infection are not treated in time, about 5 in 10,000 patients may develop stomach cancer.