PREGNANCY
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Am J Public Health. 2004 Sep;94(9):1531-7. The relation of breastfeeding and body mass index to asthma and atopy in children: a prospective cohort study to age 6 years. Oddy WH, Sherriff JL, de Klerk NH, Kendall GE, Sly PD, Beilin LJ, Blake KB, Landau LI, Stanley FJ. Department of Nutrition, Dietetics adn Food Science, Curtin University of Technology, Perth, Australia. wendyo@ichr.uwa.edu. Au Objectives:We investigated the relationship between breastfeeding, asthma and atopy, and child body mass index (BMI). Methods:From a prospective birth cohort (n = 2860) in Perth, Western Australia, 2195 children were followed up to age 6 years. Asthma was defined as doctor-diagnosed asthma and wheeze in the last year, and atopy was determined by skin prick test of 1596 children. Breastfeeding, BMI, asthma, and atopy were regressed allowing for confounders and the propensity score for overweight. Results:Using fractional polynomials, we found no association between breastfeeding and overweight. Less exclusive breastfeeding was associated with increased asthma and atopy, and BMI increased with asthma. Conclusions:Less exclusive breastfeeding leads to increases in child asthma and atopy and a higher BMI is a risk factor for asthma.
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