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The relationship of breast-feeding, overweight, and asthma in preadolescents
Ist Teil von
Journal of allergy and clinical immunology, 2007-09, Vol.120 (3), p.551-556
Ort / Verlag
New York, NY: Mosby, Inc
Erscheinungsjahr
2007
Quelle
Access via ScienceDirect (Elsevier)
Beschreibungen/Notizen
Background Breast-feeding is suggested to be associated with overweight or asthma in children. Overweight and asthma may share common environmental influences of which breast-feeding may be one. Objective We evaluated whether short duration of exclusive breast-feeding and subsequent overweight were associated with asthma. Methods A nested case-control study included 246 children with pediatric allergist–diagnosed asthma and 477 controls without asthma at age 8 to 10 years. Information on exclusive breast-feeding was obtained from questionnaire data. Overweight at 8 to 10 years of age was defined as body mass index ≥85th percentile of age and sex-specific growth charts. The association between asthma and exclusive breast-feeding <12 weeks plus overweight, adjusted for sex, parental asthma, aboriginal origin, passive smoking at birth, residence location, and family income, was determined in logistic regression analyses. Results Exclusive breast-feeding <12 weeks was closely associated with overweight at age 8 to 10 years ( P < .001). Exclusive breast-feeding <12 weeks plus overweight was significantly associated with asthma (adjusted OR, 1.81; 95% CI, 1.11-2.95; P = .018). This association appeared to be strong in children whose mothers had asthma (adjusted OR, 3.93; 95% CI, 1.17-13.2) and also in boys (adjusted OR, 2.22; 95% CI, 1.14-4.34). Asthma was not associated with either exclusive breast-feeding <12 weeks or overweight in the absence of the other. Conclusion Short duration of exclusive breast-feeding and subsequent overweight are associated with asthma in susceptible children, suggesting a common pathway. Clinical implications This finding adds to the importance of promoting prolonged breast-feeding for the prevention of overweight and asthma.