Skip to content

    Asthma Health Center

    Font Size
    A
    A
    A

    Vitamin D May Help Treat Some Asthma

    Benefit Seen in Small Study of Patients With Steroid-Resistant Asthma
    By
    WebMD Health News
    Reviewed by Louise Chang, MD

    Dec. 8, 2005 -- Vitamin D could help treat steroid-resistant asthma, scientists report.

    Their small pilot study in The Journal of Clinical Investigation shows that vitamin D may help people with steroid-resistant asthma respond better to steroid pills taken for asthma.

    That's based on lab tests done on cells, as well as a brief experiment with a small group of asthma patients.

    Vitamin D might also help treat other diseases involving inflammation and the immune system, write the researchers. However, their study doesn't include any recommendations about taking vitamin D supplements.

    The asthma experts who led the study included Catherine Hawrylowicz, PhD, of King's College London.

    Steroid-Resistant Asthma

    The study focused on asthma that doesn't respond to steroid treatments.

    Steroids help many people manage their asthma. Most asthma patients take their steroids through inhaled medications.

    Others must take steroid pills to control their asthma, especially during acute attacks. Some of those patients don't respond to steroids. That limits their treatment options.

    Testing Vitamin D

    The form of vitamin D used in this study was calcitriol, or vitamin D-3. It's the form of vitamin D that the body uses. It's also the type found in many vitamin supplements.

    First, the researchers took blood samples from a small group of people with and without steroid-resistant asthma.

    The scientists studied the patients' T-cells, which are made by the immune system. The T-cells of people with steroid-resistant asthma weren't up to par in producing a chemical called IL-10. That chemical helps tame immune responses tied to asthma and allergies.

    Next, the scientists exposed the T-cells to vitamin D-3. When that happened, the T-cells were more sensitive to steroids and boosted production of IL-10.

    No breathing tests or patient surveys were done to see if people breathed better or wheezed less.

    New Hope

    "The hope is that this work will lead to new ways to treat people who don't respond to steroid treatment as it currently stands," Hawrylowicz says, in a news release.

    "It could also help those people who are on heavy doses of steroids to reduce the amount of medication they are taking," she says.

    When Is Your Asthma Worse?

    When Is Your Asthma Worse?

    Take the WebMD Asthma assessment to get Personalized Action Plan

    Start Now

    Today on WebMD

    Lung and bronchial tube graphic
    5 common triggers.
    group jogging in park
    Should you avoid fitness activities?
     
    asthma inhaler
    Learn about your options.
    man feeling faint
    What’s the difference?
     
    Madison Wisconsin Capitol
    Slideshow
    woman wearing cpap mask
    Article
     
    red wine pouring into glass
    Slideshow
    Woman holding inhaler
    Quiz
     
    Man outdoors coughing
    Article
    Lung and bronchial tube graphic
    Article
     
    10 Worst Asthma Cities
    Slideshow
    runner
    Article