SynthesisInflammatory bowel diseases2026
Systematic review and meta-analysis of childhood exposure to antibiotics and the subsequent risk of IBD.
Synthesis in Inflammatory bowel diseases, 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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Authors and funding
5 authors.
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Abstract
backgroundAntibiotic use in early childhood may alter the developing microbiome and has been proposed as a risk factor for inflammatory bowel disease (IBD). We conducted a systematic review to examine the association between childhood antibiotic use and subsequent risk of IBD.
methodsIn a systematic literature search, we identified cohort and case-control studies reporting the association between antibiotic use (exposure age <1 to 17 years) and development of IBD. MEDLINE and EMBASE databases were searched from inception through December 31, 2024. Studies reporting a hazard ratio, odds ratio, or risk ratio (RR) were included. To account for heterogeneity, pooled estimates were calculated using the DerSimonian-Laird random-effects model. Estimates were adjusted for potential confounding as reported in the original studies.
resultsWe identified 10 studies, of which 8 (n = 2783 cases) reported associations between childhood antibiotics and IBD risk. Additionally, 2 studies on Crohn's disease (CD) and 1 on ulcerative colitis were included in disease-specific analyses. In pooled analyses, antibiotic exposure compared with no exposure was associated with increased risk of IBD (RR, 1.42; 95% confidence interval [CI], 1.23-1.66), CD (RR, 1.59; 95% CI, 1.39-1.81), and ulcerative colitis (RR, 1.23; 95% CI, 1.08-1.40). Heterogeneity was low to moderate (I2 = 0%-35%), and funnel plots did not indicate publication bias (Egger's test, P = .12-.43). Adjustment for infections did not attenuate the association between childhood antibiotic exposure and IBD development.
conclusionsWhile causal interpretation should be cautious, childhood exposure to antibiotics was associated with an increased risk of later IBD, particularly for CD.
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