Vitamin D deficiency is a prevalent and important health issue that warrants vigilant systematic screening and appropriate treatment and follow-up on the part of physicians,
especially those in the primary care and cardiovascular fields. In this article we review the sources and metabolism of vitamin D, the epidemiology of vitamin D deficiency, and the available evidence linking vitamin D deficiency to cardiovascular disease; and we suggest an approach to systematic screening and to treatment of vitamin D deficiency.
