Titre :
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Do risk factors for childhood infections and malnutrition protect against asthma ? a study of Brazilian male adolescents. (2003)
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Auteurs :
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Rosangela DA COSTA LIMA ;
BARROS (Fernando-C) : URY. Post-Graduate Programme in Epidemiology. Universidade Federal de Pelotas. Montevideo. ;
Ana-Maria-b MENEZES ;
Cesar-G VICTORA ;
Universidade Federal de Pelotas. Post Graduate Programme in Epidemiology. Pelotas. BRA
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Type de document :
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Article
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Dans :
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American journal of public health (vol. 93, n° 11, 2003)
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Pagination :
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1858-1864
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Langues:
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Anglais
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Mots-clés :
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Malnutrition
;
Enfant
;
Homme
;
Asthme
;
Facteur risque
;
Infection
;
Adolescent
;
Brésil
;
Amérique
;
Epidémiologie
;
Maladie nutrition
;
Appareil respiratoire [pathologie]
;
Bronchopneumopathie obstructive
;
Amérique du Sud
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Résumé :
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[BDSP. Notice produite par INIST-CNRS EOR0x31o. Diffusion soumise à autorisation]. Objectives : We studied the association between early life conditions and asthma in adolescence. Methods : We conducted a population-based birth cohort study involving 2250 male 18-year-olds residing in Brazil. Results : Approximately 18% of the adolescents reported having asthma. Several childhood factors were found to be significantly associated with increased asthma risk : being of high socioeconomic status, living in an uncrowded household, and children being breastfed for 9 months or longer. Conclusions : The present results are consistent with the "hygiene hypothesis," according to which early exposure to infections provides protection against asthma. The policy implications of our findings are unclear given that risk factors for asthma protect against serious childhood diseases in developing countries.
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