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Published on: August 7, 2017
No association between overweight and asthma or allergy in adolescence after wheezing in infancy
Marja Ruotsalainen1, Mari K Hyvärinen, Antti Saari
1Department of Pediatrics, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland. marja.ruotsalainen@kuh.fi
Insights
Childhood wheezing did not predict adolescent obesity or asthma. Adolescent weight status showed no significant link to asthma or allergies following early-life bronchiolitis.
Area of Science:
- Pediatric respiratory health
- Adolescent medicine
- Obesity and chronic disease
Background:
- Infants hospitalized for wheezing are at risk for later respiratory issues.
- The relationship between childhood wheezing, subsequent weight status, and adolescent asthma/allergy requires further investigation.
Purpose of the Study:
- To examine the association between weight status (overweight/obesity) and asthma, allergy, and respiratory symptoms in adolescents.
- To determine if a history of infantile bronchiolitis influences this association.
Main Methods:
- A cohort of adolescents (age 15-18) previously hospitalized for wheezing in infancy was surveyed.
- Body Mass Index (BMI) standard deviation scores (BMI-SDS) classified participants as normal weight, overweight, or obese.
- Asthma, allergy, respiratory symptoms, and medication use were compared between weight groups.
Main Results:
- Overweight or obesity was present in 23.3% of the adolescent cohort.
- No significant association was found between overweight/obesity and doctor-diagnosed or self-reported asthma or allergies.
- Use of inhaled corticosteroids also showed no significant link to weight status.
Conclusions:
- Adolescent weight status, including overweight and obesity, is not significantly associated with asthma or allergies in individuals with a history of infantile wheezing.
- Early-life bronchiolitis does not appear to predispose individuals to asthma or allergies based on their adolescent weight status.
Aims:
The aim of the study was to evaluate the association between weight status and asthma, allergy and respiratory symptoms in adolescents with bronchiolitis in infancy.
Subjects And Methods:
At age 15-18 years, a questionnaire was sent to 96 study subjects hospitalized for wheezing at age <24 months and followed up subsequently. Sixty-seven (70%) of them answered. Weight and height data for body mass index (BMI) calculation were available in 60 (63%) cases. Asthma, allergy, respiratory symptoms and the use of asthma medication were compared between overweight or obese and normal weight groups constructed by age- and sex-specific BMI standard deviation scores (BMI-SDS). Population controls matched for sex, and birth month and place, were recruited for this study phase at age 15-18 years.
Results:
Eleven (18.3%) study subjects were overweight (BMI-SDS >0.78 in males and >1.16 in females) and only 3 (5.0%) were obese (BMI-SDS >1.70 in males and >2.10 in females) at 16.5 (median) years of age. Overweight or obesity had no significant association with doctor-diagnosed or self-reported asthma, allergy or the use of inhaled corticosteroids. The negative results were confirmed by adjusted analyses.
Conclusion:
Weight status had no association with asthma or allergy in adolescence after wheezing in infancy.
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