"Television allergy" - increased TV viewing associated with development of asthma

One possible cause for the increased prevalence of asthma is that breathing patterns associated with sedentary behavior could lead to developmental changes in children lungs.

In a birth cohort of more than 3000 children there was a linear trend for increased television viewing at 3.5 years to be associated with the development of asthma at 11 years.

Children with more than 2 hours of viewing per day were almost twice as likely to have asthma as those with only 1 to 2 hours of viewing. The outcome was independent of body mass and sedentary behavior at age 11.5 years (Thorax 2009;64:321-5).

References:
News Beyond Our Pages. JACI, Volume 123, Issue 6, Pages 1197-1198 (June 2009).
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