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Saturday, September 20, 2008

Summer and Vitamin D

In the summer you need less vitamin D supplements, esepecially if you live in the north. What I mean is that in the summer, in the north, you can cut back on your vitamin D supplementation. In the winter, if you live in the north, you might want to take 2,000 IU of vitamin D daily. In the summer you can cut this back to 1,000 IU daily.
Calls to increase vitamin D intake have been growing. Indeed, only recently fifteen experts from universities, research institutes, and university hospitals around the world called for international agencies to "reassess as a matter of high priority" dietary recommendations for vitamin D because current advice is outdated and puts the public at risk of deficiency (The American Journal of Clinical Nutrition, Vol. 85, pp. 860-868). (Source: Accessed 9/20.2008.)
The point is that vitamin D is vital to health and in the summer we get more of it because of exposure to the sun. But come winter and perhaps even fall, you'll want to up your intake. Most people don't get enough vitamin D. Plus adverse reactions don't usually occur except with megadoses. Many physicians recommend 1,000 to 2,000 IU per day. (See, e.g.. Accessed 9/20/08.)

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