Associations of sugar-containing beverages with asthma prevalence in 11-year-old children: the PIAMA birth cohort

BACKGROUND/OBJECTIVES: Recently, a few studies have linked soft drink consumption to increased asthma risk, but the contribution of different types of soft drinks is unknown. We investigated cross-sectional associations between six different types of soft drinks and asthma in 11-year-old children. SUBJECTS/METHODS: We analyzed data of 2406 children participating in the Dutch Prevention and Incidence of Asthma and Mite Allergy birth cohort. At age 11, children self-reported consumption of sugar-added drinks, diet drinks, sweetened milk drinks, 100% fruit juice, energy drinks and sport drinks. The definition of asthma was based on parental reports of wheezing, prescription of inhaled corticosteroids and doctor's diagnosis of asthma. RESULTS: The prevalence of asthma in this study was 5.8%. In adjusted logistic regression analyses, asthma risk was increased for high (>= 10 glasses/week (gl/wk) versus low (< 4 gl/wk) consumption of 100% fruit juice (odds ratio (OR): 2.09, 95% confidence interval (CI): 1.21-3.60), sugar-added drinks (OR: 1.56, 95% CI: 0.95-2.56) and for very high (> 21.5 gl/wk) versus low (< 12.5 gl/wk) total sugar-containing beverage (SCB) consumption (OR: 1.91, 95% CI: 1.04-3.48). Consumption of other beverages and consumption of fruit were not associated with increased asthma risk. No evidence for mediation of the observed associations by body mass index was found. CONCLUSIONS: This study indicates that high consumption of 100% fruit juice and total SCBs is associated with increased asthma risk in children. The positive association between consumption of 100% fruit juice and asthma is an unexpected finding that needs confirmation in future studies.