pylori infection causes long-lasting inflammation in the stomach. Over many years, this can contribute to changes in the stomach lining that increase the risk of gastric adenocarcinoma. H. pylori is also strongly associated with gastric MALT lymphoma. Institut National du Cancer
The National Cancer Institute identifies chronic H. pylori infection as a major risk factor for stomach cancer. Institut National du Cancer
However:
Having H. pylori does not mean you have stomach cancer.
Many people with chronic H. pylori infection never develop cancer.
