Vitamin D deficiency and mortality.


PURPOSE OF REVIEW To summarize recent findings on vitamin D deficiency and mortality. The serum concentration of 25-hydroxyvitamin D [25(OH)D], the metabolic precursor of the vitamin D hormone calcitriol, is the standard for assessing vitamin D status. Deficient 25(OH)D concentrations (<25 nmol/l) are prevalent in Europe and North America. RECENT FINDINGS Several large nonrandomized studies indicate that different from adequate 25(OH)D concentrations (>75 nmol/l), deficient 25(OH)D concentrations are associated with excess mortality in the general population and in patients with increased cardiovascular disease risk. Results support an earlier meta-analysis of controlled trials that were not primarily designed to assess mortality showing a survival benefit of vitamin D supplementation over no supplementation in middle-aged and elderly persons. In patients with advanced chronic diseases such as end-stage heart failure, however, circulating calcitriol predicts mid-term mortality better than 25(OH)D does. Available data indicate that these patients may enter a vicious cycle of low calcitriol, increased inflammation markers, and renal impairment, which may be difficult to escape by simple vitamin D supplementation. SUMMARY Accumulating evidence suggests that vitamin D deficiency is linked to excess mortality. However, future studies should clarify to which extent vitamin D supplementation can improve survival in the aging population and in specific patient groups.

DOI: 10.1097/MCO.0b013e3283310767
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@article{Zittermann2009VitaminDD, title={Vitamin D deficiency and mortality.}, author={Armin Zittermann and Jan F. Gummert and Jochen Boergermann}, journal={Current opinion in clinical nutrition and metabolic care}, year={2009}, volume={12 6}, pages={634-9} }