Antioxidants Linked to Lower Asthma Risk

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Antioxidants Linked to Lower Asthma Risk

Provided by Medinews.com on 2/12/2004

 

 

 

 

 

 

A large study of survey data on youths under 17 has shown that increases in

intakes of antioxidants serum beta-carotene, vitamin C, and the trace mineral

selenium were associated with a lower risk of asthma prevalence. The results

were reported in the February 1, 2004, issue of the American Journal of

Respiratory and Critical Care Medicine.

Even stronger asthma associations for these antioxidants were found in subgroups

of young people exposed to passive smoke. Researchers studied U.S. national

survey data on 6,153 young people four to 16 years old. They found that serum

vitamin E had little or no association with asthma, but an increase in

beta-carotene was associated with a 10% reduction in asthma prevalence in those

not exposed to smoke and a 40% reduction in those who were exposed to passive

smoke. The pattern for vitamin C was similar. An increase in selenium was

associated with a 10-20% decrease in asthma prevalence. In youths with passive

smoke exposure, investigators found a 50% reduction in asthma associated with

selenium.

The study was conducted by Dr. Rachel N. Rubin and colleagues at Cornell

University (Ithaca, NY, USA).

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