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Low levels of vitamin D worsen asthma

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Low levels of vitamin D worsen asthma

A study published in the medical journal *Allergy, Asthma & Immunology Research* in September 2013 shows that low blood levels of vitamin D are associated with worsened asthma symptoms. The researchers analysed 25-hydroxyvitamin D levels in the blood of 121 adult asthma patients. Those with the lowest 25-hydroxyvitamin D levels had more severe asthma than those with higher levels of 25-hydroxyvitamin D.

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Allergy Asthma Immunol Res. 2013 September; 5(5): 283–288. Vitamin D Insufficiency and Asthma Severity in Adults From Costa Rica Felicia Montero-Arias,1 Giovanni Sedó-Mejía,2 and Allan Ramos-Esquivel.