Vitamin D bioavailability in cystic fibrosis: a cause for concern?

Nutr Rev. 2012 May;70(5):280-93. doi: 10.1111/j.1753-4887.2012.00471.x. Epub 2012 Mar 30.
Mailhot G. genevieve.mailhot@umontreal.ca
Research Centre, CHU Sainte-Justine, Department of Nutrition, Université de Montréal, Montréal, Canada.

Despite the inclusion of extra vitamin D in their regimen of fat-soluble vitamin supplementation, cystic fibrosis patients remain chronically depleted of vitamin D. The persistence of suboptimal vitamin D status is often blamed on the maldigestion and malabsorption of fat.

However, the mitigated success of recent clinical trials with high-dose vitamin D supplementation suggests that vitamin D bioavailability might be impaired in these patients. Given the growing understanding of the importance of this vitamin in the regulation of multiple biological functions beyond skeletal health, the present review analyzes the current literature by addressing each step of vitamin D metabolism and action in the context of this life-limiting pathology. In addition, it highlights the importance of vitamin D in relation to organs and or conditions affected by cystic fibrosis.

© 2012 International Life Sciences Institute.

PMID: 22537214
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Web site of the author

See also VitaminDWiki

• Category of Cystic Fibrosis 52 items
• 3800 IU of vitamin D is not enough for most children with cystic fibrosis – Aug 2012
• A type of vitamin D by Biotics Research for mal-absorption probably works for Cystic Fibrosis as well
• Review of Cystic Fibrosis and Vitamin D PDF file, not web page: which has the following figure