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Low Vitamin D Has a Role in Heart Risk

Study Shows Low Levels of Vitamin D May Explain Racial Gap in Cardiovascular Risk

Vitamin D: How Much Do You Need? continued...

But a government advisory panel is reviewing this recommendation and is expected to revise it later this year.

James H. O'Keefe, MD, who directs the preventive cardiology program at the Mid America Heart Institute in Kansas City, Mo., considers the current recommendations far too low.

"Three out of four Americans are not getting enough vitamin D," he tells WebMD. "In my opinion, 1,000 IU to 2,000 IU a day is probably safe for anyone to take. That may be enough for some people but not for others."

He says African-Americans and other dark-skinned people may need even more vitamin D to avoid deficiency.

Milk and other dairy products are good dietary sources of vitamin D, as are oily fish such as salmon, tuna, and mackerel. But it would be difficult, if not impossible, to get enough vitamin D from food sources alone, O'Keefe says.

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