"A 2008 study published in Korean Journal of Microbiology and Biotechnology found kimchi (fermented cabbage) contains a bacterial strain "showing strong antagonistic activity against H. pylori." The bacterium strain isolated from kimchi, designated Lb. plantarum NO1, was found to reduce the urease activity of H. pylori by 40-60% and suppress its binding to human gastric cancer cell line by more than 33%"

Eat kimchi, prevent stomach cancer?

source: Youl Lee and Hae Choon Chang (2008). "Isolation and Characterization of Kimchi Lactic Acid Bacteria Showing Anti-Helicobacter pylori Activity". Korean Journal of Microbiology and Biotechnology 2: 106–114; Wikipedia