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Public Health Nutr. 2015 Dec;18(18):3308-16. doi: 10.1017/S1368980015000828. Epub 2015 Apr 21.

Breast-feeding and postpartum weight retention: a systematic review and meta-analysis.

Author information

1
Division of Nutrition and Food Hygiene,School of Public Health,Anhui Medical University,81 Mei Shan Road,Hefei 230032,Anhui,People's Republic of China.

Abstract

OBJECTIVE:

Weight gained during pregnancy and postpartum weight retention might contribute to obesity in women of childbearing age. Whether breast-feeding (BF) may decrease postpartum weight retention (PPWR) is still controversial. The purpose of our systematic review and meta-analysis was to investigate the relationship between BF and PPWR.

DESIGN:

Three databases were systematically reviewed and the reference lists of relevant articles were checked. Meta-analysis was performed to quantify the pooled standardized mean differences (SMD) of BF on PPWR by using a random-effect model. Heterogeneity was tested using the χ 2 test and I 2 statistics. Publication bias was estimated from Egger's test (linear regression method) or Begg's test (rank correlation method).

RESULTS:

Among 349 search hits, eleven studies met the inclusion criteria for the meta-analysis. Seven studies were conducted in the USA, one in Brazil, one in France, one in Georgia and one in Croatia. Compared with formula-feeding, BF for 3 to ≤6 months seemed to have a negative influence on PPWR and if BF continued for >6 months had little or no influence on PPWR. In a subgroup meta-analysis, the results did not change substantially after the analysis had been classified by available confounding factors. There was no indication of a publication bias from the result of either Egger's test or Begg's test.

CONCLUSIONS:

Although the available evidence held belief that BF decreases PPWR, more robust studies are needed to reliably assess the impact of patterns and duration of BF on PPWR.

KEYWORDS:

Exclusive breast-feeding; Formula feeding; Mixed feeding; Obesity; Postpartum weight retention

PMID:
25895506
DOI:
10.1017/S1368980015000828
[Indexed for MEDLINE]

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