Lack of vitamin D may hurt heart

U.S. researchers have linked inadequate levels of vitamin D to increased risk of heart attack or stroke.

Patients with very low levels of vitamin D were 77 percent more likely to die, 45 percent more likely to develop coronary artery disease and 78 percent were more likely to have a stroke than patients with normal levels. Patients with very low levels of vitamin D were also twice as likely to develop heart failure than those with normal vitamin D levels.

"This was a unique study because the association between vitamin D deficiency and cardiovascular disease has not been well-established," one of the study authors Dr. Brent Muhlestein of the Intermountain Medical Center in Murray, Utah, said in a statement.

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