Studies by National Jewish Health and a study, published in American Journal of Respiratory and Critical Care Medicine, both suggest that 
Vitamin D plays a significant role in how severe asthma symptoms may be and how some people respond to medication. Don’t be surprised if you start hearing recommendations to take Vitamin D for asthma control.
Low levels of vitamin D in people who have asthma show signs of reduce lung function and less response to medication.
In another recent study Dr. Mitsuyoshi Urashima, of Jikei University School of Medicine, Tokyo, found vitamin D also appeared to suppress attacks in children with a history of asthma. Two children taking vitamin D had asthma attacks during the study, compared to 12 children taking placebo.
Urashima admitted to being a bit surprised by this finding and hopes to confirm it in a randomized trial targeting children with asthma. The results showed that people with higher vitamin D levels had better lung function measures than people with lower vitamin D levels. In particular, people with low vitamin D performed worse on tests of lung function and airway hyper-responsiveness, two hallmarks of asthma.
Researchers say vitamin D levels were directly related to the participants’ score on the breathing tests: the lower the vitamin D levels, the worse their performance. Yet another reason to consider Vitamin D for asthma control.
How much vitamin D is needed? Current recommendations for vitamin D supplements for adults is 400 IU to 600 IU, depending on age, according to the U.S. National Institutes of Health. Better yet, try getting it naturally. Sunlight, fatty fish and fish oils are great sources of vitamin D.
As always, make sure you check with your doctor first.
Wishing you the best of health
Mike Krause
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