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More severe heart disease found in patients with vitamin D deficiency
Date:3/27/2014

WASHINGTON (March 27, 2014) Vitamin D deficiency is an independent risk factor for heart disease with lower levels of vitamin D being associated with a higher presence and severity of coronary artery disease, according to research to be presented at the American College of Cardiology's 63rd Annual Scientific Session.

A growing body of research shows that vitamin D may be beneficial in preventing heart disease. Several recent studies also support the idea that low levels of vitamin D are linked to an increased risk of heart disease; however, it is still not clear whether adding vitamin D supplements may help reduce that risk.

In the largest study of its kind to evaluate the relationship between vitamin D levels and coronary artery disease, vitamin D deficiency (20ng/mL) was observed in 70.4 percent of patients undergoing coronary angiography an imaging test used to see how blood flows through the arteries in the heart. Vitamin D deficiency was associated with higher prevalence of coronary artery disease, with a 32 percent higher occurrence in patients with the lowest vitamin D levels and a near 20 percent higher frequency of severe disease affecting multiple vessels. A progressive increase in heart disease was found according to the severity of vitamin D deficiency. Patients with values lower than 10 mg/dl had a near two-fold increased rate of coronary atherosclerosis as compared with those showing normal levels.

Researchers evaluated vitamin D levels in 1,484 patients. Vitamin D deficiency was defined as levels lower than 20ng/mL, and severe vitamin D deficiency was defined as levels under 10ng/mL. Patients were considered to have coronary artery disease if they had a diameter reduction of greater than 50 percent in at least one coronary artery. The extent and severity of heart disease were measured by quantitative coronary angiography a procedure that determines the degree of blockage in arteries.

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Contact: Beth Casteel
bcasteel@acc.org
202-375-6275
American College of Cardiology
Source:Eurekalert

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