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. 2014 Jan 9:14:19.
doi: 10.1186/1471-2458-14-19.

Influence of health behaviours on the incidence of infection and allergy in adolescents: the AFINOS cross-sectional study

Esther Nova  1 , David Martínez-Gómez, Sonia Gómez-Martínez, Ana M Veses, Maria E Calle, Oscar L Veiga, Ascensión Marcos
Affiliations

Influence of health behaviours on the incidence of infection and allergy in adolescents: the AFINOS cross-sectional study

Esther Nova et al. BMC Public Health. .

Abstract

Background: Some health behaviours are liable to affect the incidence of allergies and/or common infections in young people; however, the extent and ways in which these might occur are mostly unknown. This study examines the association of health behaviours related to physical activity, sedentariness, diet and sleep with allergy and infection symptoms in adolescents, and also with biological markers that might mediate disease incidence.

Methods: The study comprised a total of 2054 adolescents (50.7% girls) from the Madrid region of Spain. The incidence of infection and allergy symptoms three months prior to the study was obtained from a self-administered questionnaire. Physical and sedentary activities, height and weight, food habits and sleep duration were also self-reported and their influence on infection and allergy incidence was assessed by logistic regression analysis. Blood biomarkers (IgE, eosinophil percentage, leptin, interleukin (IL)-2, IL-4, IL-5 and IL-10) were evaluated in a subsample of 198 subjects.

Results: Adequate sleep duration (OR = 0.79, 95%CI: 0.64 to 0.97) and unhealthy weight status (overweight/obesity) (OR = 1.35, 95%CI: 1.04-1.74) were independently associated with decreased and increased allergy incidence, respectively. No significant association was observed with infection incidence. IgE and leptin differed between adolescents with and without allergy symptoms. In regression models IgE was significantly associated with inadequate sleep duration and leptin with weight status.

Conclusion: Excess weight and inadequate sleep duration are independently associated with the incidence of allergy symptoms in adolescents. Adequate sleep duration and weight during adolescence might be relevant for a decreased risk of suffering allergy symptoms.

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Figures

Figure 1
Figure 1
Incidence of allergy in subsets of the adolescent population. Incidence of allergy across sleeping habits and body weight categories among adolescents (n = 1828) aged 13–17 years, from Madrid, Spain. Simple boxes depict odds ratios and 95% confidence interval of allergy incidence for each category, in the sex and age adjusted model.
See this image and copyright information in PMC

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