Helicobacter Pylori Infections and Gastrointestinal Cancer Risk
Summary
Helicobacter pylori is a ubiquitous gastric pathogen that initiates a cascade of mucosal changes, beginning with chronic superficial gastritis and advancing through atrophic gastritis, intestinal metaplasia, dysplasia and ultimately gastric adenocarcinoma. While eradication programmes have substantially reduced the incidence of non-cardia gastric cancer worldwide, the bacterium’s role in cardia subtypes remains under investigation. Intriguingly, H. pylori colonisation appears inversely correlated with oesophageal adenocarcinoma risk, possibly through altered gastric acidity. The global burden of H. pylori-associated cancers is uneven, with low- and middle-income regions experiencing the highest rates due to limited access to screening and treatment. Current research integrates molecular insights into bacterial virulence, host genetic susceptibility and environmental cofactors, informing precision prevention strategies and public-health policies aimed at reducing gastrointestinal cancer mortality.
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Helicobacter Pylori Infections and Gastrointestinal Cancer Risk publication trend
The graph below shows the total number of articles in helicobacter pylori infections and gastrointestinal cancer risk across all publications each year (not limited to Nature Index journals).
Technical terms
Helicobacter pylori: A spiral-shaped, gram-negative bacterium that colonises the stomach lining and induces chronic inflammation.
Chronic atrophic gastritis: Long-standing inflammation of the stomach mucosa leading to loss of glandular cells and reduced acid secretion.
Gastric adenocarcinoma: Malignant tumour arising from the glandular epithelium of the stomach.
Oesophageal adenocarcinoma: Cancer originating from glandular cells in the lower oesophagus, often linked to acid reflux.
Standardized incidence ratio (SIR): A ratio comparing observed cancer cases to the number expected in a reference population.
References
- Risk of Esophageal Adenocarcinoma After Helicobacter pylori Eradication Treatment in a Population-Based Multinational Cohort Study. Gastroenterology (2024).
- Chronic atrophic gastritis and risk of incident upper gastrointestinal cancers: a systematic review and meta-analysis. Journal of Translational Medicine (2024).
- Epidemiology of Gastric Cancer—Changing Trends and Global Disparities. Cancers (2024).
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