Breast-feeding and Helicobacter pylori infection: systematic review and meta-analysis.

Carreira, H; Bastos, A; Peleteiro, B; Lunet, N; (2014) Breast-feeding and Helicobacter pylori infection: systematic review and meta-analysis. Public health nutrition, 18 (3). pp. 500-20. ISSN 1368-9800 DOI:

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To quantify the association between breast-feeding and Helicobacter pylori infection, among children and adolescents. We searched MEDLINE™ and Scopus™ up to January 2013. Summary relative risk estimates (RR) and 95 % confidence intervals were computed through the DerSimonian and Laird method. Heterogeneity was quantified using the I² statistic. Twenty-seven countries/regions; four low-income, thirteen middle-income and ten high-income countries/regions. Studies involving samples of children and adolescents, aged 0 to 19 years. We identified thirty-eight eligible studies, which is nearly twice the number included in a previous meta-analysis on this topic. Fifteen studies compared ever v. never breast-fed subjects; the summary RR was 0·87 (95% CI 0·57, 1·32; I²=34·4%) in middle-income and 0·85 (95% CI 0·54, 1·34; I²=79·1%) in high-income settings. The effect of breast-feeding for ≥4-6 months was assessed in ten studies from middle-income (summary RR=0·66; 95% CI 0·44, 0·98; I²=65·7%) and two from high-income countries (summary RR=1·56; 95% CI 0·57, 4·26; I²=68·3%). Two studies assessed the effect of exclusive breast-feeding until 6 months (OR=0·91; 95% CI 0·61, 1·34 and OR=1·71; 95% CI 0·66, 4·47, respectively). Our results suggest a protective effect of breast-feeding in economically less developed settings. However, further research is needed, with a finer assessment of the exposure to breast-feeding and careful control for confounding, before definite conclusions can be reached.

Item Type: Article
Faculty and Department: Faculty of Epidemiology and Population Health > Dept of Non-Communicable Disease Epidemiology
Research Centre: Cancer Survival Group
PubMed ID: 24785402
Web of Science ID: 348186300014


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