Este estudio de la Universidad de Southern California se centró en 338 niños diagnosticados de asma antes de los cinco años de edad y su comparación con 570 niños controles sin la patología. Los investigadores, que presentaron sus resultados esta semana en el congreso anual de la American Thoracic Society en Seattle, observaron que ni la lactancia materna ni la exposición a animales de granja o mascotas reducen el riesgo de asma, tres elementos que en estudios anteriores se ha considerado que ejercen un efecto protector.
Por el contrario, sí que hallaron una relación con la exposición a cultivos de granja, humo de aceites, pesticidas, herbicidas y cucarachas. Además, los niños cuya madre tenía más de 35 años en el momento del parto presentaban un 70% de mayor riesgo de desarrollar asma.
Webs Relacionadas
University of Southern California
http://www.usc.edu/
ATS 2003 International Conference
http://www.thoracic.org/ic/ic2003/default.asp/
American Thoracic Society
http://www.thoracic.org/
Southern California Children´s Health Study
http://www.osti.gov/fcvt/deer2000/peterpap.pdf/
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