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Re: Light box - Vitamin D?

Posted by Dave001 on December 31, 2004, at 20:59:55

In reply to Re: Light box - Vitamin D? katia, posted by Larry Hoover on December 30, 2004, at 22:18:45

> > I'm not sure if I get Vit. D from this sunbox.
>
> If the light can't give you a sunburn, then it can't give you vitamin D. All lightboxes are shielded against UV light, so that also blocks vitamin D formation in the skin.
>

Why is UV light necessary for a sunburn? Is the skin unable to absorb energy from the spectrum of light with wavelengths below 400 nm?


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poster:Dave001 thread:9730
URL: http://www.dr-bob.org/babble/20041228/msgs/436174.html