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Friday, September 25, 2009

Summer and Light and Cancer

The light available in the summer is of a stronger UV radiation content in Northern latitudes, and as a result more vitamin D is produced during daylight hours in the summer. In fact, during the winter there may be such a reduction in vitamin D production that persons living in Northern states are more likely to get cancer than those living in the South. This is due to the increased protection from vitamin D afforded by moderate sun exposure.

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