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Logo of bmcphBioMed Centralsearchsubmit a manuscriptregisterthis articleBMC Public Health
 
BMC Public Health. 2012; 12: 107.
Published online Feb 7, 2012. doi:  10.1186/1471-2458-12-107
PMCID: PMC3311145
The relationship between breastfeeding and weight status in a national sample of Australian children and adolescents
Jane A Scott,corresponding author1,2 Su Y Ng,1 and Lynne Cobiac1,2,3
1Department of Nutrition and Dietetics, School of Medicine, Flinders University, Adelaide, South Australia
2Physical Activity and Nutrition Observatory: Research And Monitoring Alliance (PANORAMA), Flinders University, Adelaide, Australia
3CSIRO Food and Nutritional Sciences, Kintore Ave, Adelaide, South Australia
corresponding authorCorresponding author.
Jane A Scott: jane.scott/at/flinders.edu.au; Su Y Ng: ng.suyi/at/gmail.com; Lynne Cobiac: lynne.Cobiac/at/csiro.au
Received August 21, 2011; Accepted February 7, 2012.
Abstract
Background
Breastfeeding has been shown consistently in observational studies to be protective of overweight and obesity in later life. This study aimed to investigate the association between breastfeeding duration and weight status in a national sample of Australian children and adolescents.
Methods
A secondary analysis of the 2007 Australian National Children's Nutrition and Physical Activity Survey data involving 2066, males and females aged 9 to 16 years from all Australian states and territories. The effect of breastfeeding duration on weight status was estimated using multivariate logistic regression analysis.
Results
Compared to those who were never breastfed, children breastfed for ≥6 months were significantly less likely to be overweight (adjusted odds ratio: 0.64, 95%CI: 0.45, 0.91) or obese (adjusted odds ratio: 0.51, 95%CI: 0.29, 0.90) in later childhood, after adjustment for maternal characteristics (age, education and ethnicity) and children's age, gender, mean energy intake, level of moderate and vigorous physical activity, screen time and sleep duration.
Conclusions
Breastfeeding for 6 or more months appears to be protective against later overweight and obesity in this population of Australian children. The beneficial short-term health outcomes of breastfeeding for the infant are well recognised and this study provides further observational evidence of a potential long-term health outcome and additional justification for the continued support and promotion of breastfeeding to six months and beyond.
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