Monday, January 07, 2008

Vitamin D deficiency linked to heart, stroke risk

People with low vitamin D levels face an elevated risk for heart attack, heart failure and stroke, according to a study published on Monday suggesting that the vitamin may protect against cardiovascular disease.

The elevated risk was particularly acute among those with high blood pressure, the researchers found.

Vitamin D helps the body absorb calcium and is considered important for bone health, but a number of studies have indicated it might provide a number of other benefits. In adults, vitamin D deficiency can lead to osteoporosis, and it can lead to rickets in children.

Researchers led by Dr. Thomas Wang of Harvard Medical School in Boston followed 1,739 people, average age 59, for 5 years, taking blood samples to gauge vitamin D levels.

Those with low vitamin D levels had about a 60 percent higher risk of a cardiovascular event like heart attack, heart failure or stroke compared to those with higher levels, even with well-known cardiovascular risk factors such as diabetes, high cholesterol and high blood pressure taken into account.

The risk for heart attack, heart failure or stroke was double in people with both high blood pressure, also known as hypertension, and vitamin D deficiency, the researchers said.

The findings were published in Circulation, a journal published by the American Heart Association.

The people in this study were offspring of original participants in the long-running Framingham Heart Study centered in Massachusetts. They had no prior history of cardiovascular disease. All of them were white.

Steve - the key here is that none of the participants had prior history of heart disease.

1 comment:

Brate said...

According to the American Heart Association, heart disease is the nation's single leading cause of death for both men and women. At least 58.8 million people in this country suffer from some form of heart disease.

And on the whole, cardiovascular diseases (the combination of heart disease and stroke) kill some 950,000 Americans every year.

In fact, according to the American Heart Association, almost 150,00 Americans killed by cardiovascular disease each year are under the age of 65. And one out of every 20 people below the age of 40 has heart disease.

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