Antioxidants Linked to Lower Asthma Risk

Discussion in 'Health and medical' started by doe, Feb 12, 2004.

  1. doe

    doe Guest

    Antioxidants Linked to Lower Asthma Risk

    By staff writers
    Posted on 12 February 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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