Observational studyBMJ open gastroenterology2026
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Observational study in BMJ open gastroenterology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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11 authors.
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Abstract
objectiveColonic diverticulosis is highly prevalent in ageing populations, yet the role of microbial factors remains unclear.
methodsWe performed a retrospective observational study of 5646 asymptomatic adults undergoing screening colonoscopy with concurrent oesophagogastroduodenoscopy (2007-2020). Diverticulosis was classified endoscopically by distribution; HP status was determined histologically from gastric biopsies. Multivariable logistic regression adjusted for metabolic, sociodemographic and lifestyle factors. A subset with follow-up colonoscopy (n=510) was analysed descriptively.
resultsDiverticulosis was present in 37% of participants and HP infection in 19%. No association was found between HP infection and diverticulosis in univariable (OR 1.01, 95% CI 0.88 to 1.15; p=0.935) or fully adjusted analysis (OR 0.86, 95% CI 0.72 to 1.02; p=0.078), with an effect size too small to be clinically meaningful. Subgroup analyses by diverticular distribution and interaction analyses across age, sex, metabolic syndrome and lifestyle factors showed consistent null results. In the longitudinal subset, diverticulosis prevalence at follow-up did not differ by baseline HP status (63.9% vs 62.1%; p=0.749).
conclusionsIn this large screening cohort with simultaneous endoscopic and histological confirmation, HP infection was not associated with colonic diverticulosis across subtypes or risk strata. These findings do not support HP status as a clinically useful marker of asymptomatic diverticulosis. In future microbiome-focused studies of diverticulosis, HP infection may be best regarded as a potential confounder or marker of broader host, socioeconomic or healthcare-related factors.
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