What is the role of vitamin D deficiency in bronchiectasis?

Updated: Sep 15, 2020
  • Author: Ethan E Emmons, MD; Chief Editor: Zab Mosenifar, MD, FACP, FCCP  more...
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Vitamin D deficiency is common in bronchiectasis and correlates with markers of disease severity. Chalmers et al measured serum 25-hydroxyvitamin-D by immunoassay in 402 stable patients with bronchiectasis and found that 50% were vitamin D deficient (levels below 25 nmol/L), compared with only 12% of matched controls, and 43% were vitamin D insufficient (25-74 nmol/L). Vitamin D–deficient bronchiectasis patients were more likely to be colonized with Pseudomonas aeruginosa, had lower forced expiratory volume in 1 second (FEV1) percent predicted, and had more frequent pulmonary exacerbations. [5]

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