Breastfeeding and asthma and allergies: a systematic review and meta‐analysis

To systematically review the association between breastfeeding and childhood allergic disease.Predetermined inclusion/exclusion criteria identified 89 articles from PubMed, CINAHL and EMBASE databases. Meta-analyses performed for categories of breastfeeding and allergic outcomes. Meta-regression explored heterogeneity.More vs. less breastfeeding (duration) was associated with reduced risk of asthma for children (5-18 years), particularly in...