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Exclusive breastfeeding and incident atopic dermatitis in childhood: a systematic review and meta-analysis of prospective cohort studies.
Type
article
Resource
Br J Dermatol. 2009 Aug;161(2):373-83. Epub 2009 Feb 23.
Date Issued
2009
Author(s)
Yang YW
Tsai CL
Lu CY.
Subjects
臺北醫學大學附設醫院
科部：皮膚科
類別：期刊論文
Abstract
BACKGROUND: Breastfeeding is undisputedly preferable to formula feeding for infant nutrition because of its nutritional, immunological and psychological benefits. However, studies on the association between breastfeeding and development of atopic dermatitis (AD) have shown inconsistent results.
OBJECTIVES: To examine the association between exclusive breastfeeding for at least 3 months after birth and the development of AD in childhood.
METHODS: An electronic literature search of MEDLINE (January 1966-May 2008) and EMBASE (1980-May 2008) was conducted. Prospective cohort studies that met the predetermined criteria were independently assessed by three reviewers. The pooled effect estimate was calculated by random effects model. Heterogeneity across the studies was investigated by meta-regression analysis.
RESULTS: Twenty-one studies with 27 study populations were included for meta-analysis. The summary odds ratio (OR) for the effect of exclusive breastfeeding on the risk of AD was 0.89 (95% confidence interval, CI 0.76-1.04). Heterogeneity was found across the studies (chi(2) = 83.6, d.f. = 26; P < 0.001). Breastfeeding was associated with a decreased risk of AD (OR 0.70; 95% CI 0.50-0.99) when analysis was restricted to the studies comparing breastfeeding with conventional formula feeding. The pooled OR for study populations with atopic heredity was 0.78 (95% CI 0.58-1.05).
CONCLUSIONS: There is no strong evidence of a protective effect of exclusive breastfeeding for at least 3 months against AD, even among children with a positive family history.
OBJECTIVES: To examine the association between exclusive breastfeeding for at least 3 months after birth and the development of AD in childhood.
METHODS: An electronic literature search of MEDLINE (January 1966-May 2008) and EMBASE (1980-May 2008) was conducted. Prospective cohort studies that met the predetermined criteria were independently assessed by three reviewers. The pooled effect estimate was calculated by random effects model. Heterogeneity across the studies was investigated by meta-regression analysis.
RESULTS: Twenty-one studies with 27 study populations were included for meta-analysis. The summary odds ratio (OR) for the effect of exclusive breastfeeding on the risk of AD was 0.89 (95% confidence interval, CI 0.76-1.04). Heterogeneity was found across the studies (chi(2) = 83.6, d.f. = 26; P < 0.001). Breastfeeding was associated with a decreased risk of AD (OR 0.70; 95% CI 0.50-0.99) when analysis was restricted to the studies comparing breastfeeding with conventional formula feeding. The pooled OR for study populations with atopic heredity was 0.78 (95% CI 0.58-1.05).
CONCLUSIONS: There is no strong evidence of a protective effect of exclusive breastfeeding for at least 3 months against AD, even among children with a positive family history.
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