The US authors conclude that their findings “may have potentially broad public-health implications, given the high prevalence of vitamin D deficiency in developed countries, the contribution of lifestyle and geography to vitamin D status, and the ease, safety and low cost of treating vitamin D deficiency”.
In the study, published in Circulation (online January 7th 2008), 1,739 participants, free of cardiovascular disease at baseline, were followed for a median of 5.4 years and 120 individuals developed a first cardiovascular event. After adjustment for conventional cardiovascular risk factors, individuals with 25-OH D levels below 15 ng/