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According to a study published in the latest issue of Archives of Internal Medicine, Vitamin D deficiency increases death risk.

People who have low levels of vitamin D in their blood had a greater risk of dying.

Research was led by Harald Dobnig, MD of the Medical University of Graz, Austria. In cross-sectional studies, low serum levels of 25-hydroxyvitamin D are associated with higher prevalence of cardiovascular risk factors and disease. This study aimed to determine whether endogenous 25-hydroxyvitamin D and 1,25-dihydroxyvitamin D levels are related to all-cause and cardiovascular mortality.

3,258 men and women were tracked for 7 years and 8 months, who had been referred for an angiogram of their heart arteries. More than two-thirds had significant blockages in their coronary arteries.
737 of them died, including 463 from cardiovascular problems.

It was revealed that people with the lowest levels of vitamin D in their blood had the highest chances of dying. Although chances of dying due to heart disease rose with decreasing levels of vitamin D, dying from other causes was more likely, too.

Patients with little coronary artery disease were still much more likely to die during follow-up if they had low vitamin D levels.

It’s not yet known whether low levels of vitamin D can trigger death from heart disease and a causal relationship has yet to be proved by intervention trials using vitamin D.

It should be noted that in January 2008, Researchers at the Harvard Medical School in Boston reported that vitamin D deficiency is associated with an increase in high blood pressure and cardiovascular risk. Researchers monitored the vitamin D levels, blood pressure and other cardiovascular risk factors of 1739 people, of an average age of 59 years for 5 years. They found that those people with low levels of vitamin D had a 62% higher risk of a cardiovascular event than those with normal vitamin D levels.