What is a known risk factor for gastric cancer?

A known risk factor for gastric cancer is H. pylori infection. This bacterium is a major contributor to the development of chronic gastritis and is linked to the progression of gastric cancer. H. pylori infection can lead to changes in the gastric mucosa, promoting inflammation and potentially resulting in cellular changes that increase the risk of cancerous growth. The association between H. pylori and gastric cancer is well-documented in medical literature, making it a significant factor in understanding the etiology of this type of cancer.

In contrast, a high fiber diet and frequent exercise are both associated with a reduced risk of various types of cancer, including certain gastrointestinal cancers, and a low salt intake has not been established as a direct risk factor for gastric cancer. These lifestyle factors generally contribute positively to overall health and may help lower cancer risk.