This study was published in the American Journal of Epidemiology 2005 Sep 1;162(5):397-403
Study title and authors:
Duration of breastfeeding and risk of overweight: a meta-analysis.
Harder T, Bergmann R, Kallischnigg G, Plagemann A.
Clinic of Obstetrics, Division of Experimental Obstetrics, Charité-University Medicine, Berlin, Germany. thomas.harder@charite.de
This study can be accessed at: http://www.ncbi.nlm.nih.gov/pubmed/16076830
This paper is an analysis of 17 studies that investigated the connection between breastfeeding and the risk of been overweight in later life.
The study found:
(a) Compared to those who were exclusively formula-fed, those who were breastfed for 1-3 months had a 19% decreased risk of been overweight in later life.
(b) Compared to those who were exclusively formula-fed, those who were breastfed for 4-6 months had a 24% decreased risk of been overweight in later life.
(c) Compared to those who were exclusively formula-fed, those who were breastfed for 7-9 months had a 33% decreased risk of been overweight in later life.
(d) Compared to those who were exclusively formula-fed, those who were breastfed for more than 9 months had a 32% decreased risk of been overweight in later life.
The data from the study reveals that a longer duration of breast feeding (up to nine months) is associated with a decreased risk of been overweight in later life.
