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Body Mass Index Development and Asthma Throughout Childhood
American Journal of Epidemiology
|August 26, 2017
Summary
Persistent asthma is linked to higher body mass index (BMI) in girls throughout childhood, but not in boys. This study highlights a sex-specific relationship between childhood asthma and overweight development.
Area of Science:
- Pediatric Epidemiology
- Allergy and Immunology
- Growth and Development
Background:
- Overweight and asthma are frequently associated, but the timing of their onset is not well understood.
- Understanding the interplay between asthma development and body mass index (BMI) is crucial for pediatric health.
- Longitudinal data is needed to clarify the temporal relationship between asthma and BMI trajectories.
Purpose of the Study:
- To investigate the relationship between asthma phenotypes and body mass index (BMI) development from birth to adolescence.
- To examine sex-specific differences in the association between asthma and BMI trajectories.
- To determine if persistent asthma influences BMI development in children.
Main Methods:
- Utilized data from the BAMSE (children, allergy, milieu, Stockholm, epidemiology) Project, a Swedish birth cohort study (1994-2013).
- Analyzed BMI development across 13 time points from birth to adolescence in 2,818 children with and without asthma.
- Employed quantile regression and generalized estimating equations to assess BMI percentiles and the risk of high BMI associated with asthma phenotypes.
Main Results:
- A significant difference in BMI development was observed between girls with and without asthma, particularly those with persistent asthma.
- Females with persistent asthma showed a higher likelihood of elevated BMI (above the 85th percentile) in adolescence compared to females without asthma.
- No consistent association between asthma and BMI development was found in males.
- The disparity in BMI between girls with and without persistent asthma increased with age.
Conclusions:
- Persistent asthma is associated with high BMI throughout childhood in females, suggesting a sex-specific link.
- The findings indicate that asthma may influence BMI trajectories differently in boys and girls.
- Further research is warranted to explore the underlying mechanisms driving the sex-specific association between asthma and overweight in children.
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