# Research on H. pylori and gastrointestinal cancer

> Live situation record from CLSTR: https://clstr.news/situations/research-on-h-pylori-and-gastrointestinal-cancer
> Updated: 2026-09-09T11:13:27.000Z. Sources: 8. Developments: 2.

Medical research has identified new links between Helicobacter pylori (H. pylori) and gastrointestinal health. An international analysis involving 48 million people suggests that H. pylori exposure may be associated with approximately 22% of global colorectal cancer cases, increasing the risk of the disease by 1.59 times. While H. pylori is a known cause of stomach cancer, its connection to bowel cancer has been debated; researchers suggest antibiotic eradication might reduce risk, though benefits may take 10 years to manifest. Additionally, studies indicate that the link between H. pylori and Small Intestinal Bacterial Overgrowth (SIBO) varies by patient due to individual gastric phenotypes.

In cancer treatment developments, the NEOPRISM-CRC clinical trial demonstrated that preoperative immunotherapy using pembrolizumab may offer significant benefits for stage 2 or stage 3 bowel cancer patients, with no recurrences reported after 33 months. Furthermore, researchers at the Santiago de Compostela Health Research Institute have identified molecules in bovine colostrum that can reversibly slow the proliferation of gastrointestinal cancer cells and increase sensitivity to chemotherapy.

## Timeline

### 2026-09-09: Medical researchers identify cancer therapeutic potential in colostrum and link H. pylori to SIBO

New medical studies reveal the therapeutic potential of bovine colostrum vesicles in treating gastrointestinal cancer and clarify the complex link between Helicobacter pylori and SIBO.

5 sources. https://clstr.news/cluster/medical-researchers-identify-cancer-therapeutic-potential-in-colostrum-and-link-h-pylori-to-sibo

### 2026-09-09: Bowel cancer research links H. pylori to global cases and immunotherapy to successful outcomes

Research links H. pylori bacteria to 22% of global bowel cancer cases, while new clinical trials show preoperative immunotherapy can keep certain patients cancer-free for over three years.

3 sources. https://clstr.news/cluster/bowel-cancer-research-links-h-pylori-to-global-cases-and-immunotherapy-to-successful-outcomes

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Cite as: Research on H. pylori and gastrointestinal cancer. CLSTR, https://clstr.news/situations/research-on-h-pylori-and-gastrointestinal-cancer