Posted by Dave001 on December 31, 2004, at 21:24:55
In reply to Re: Light box - Vitamin D?, posted by Dave001 on December 31, 2004, at 20:59:55
> > > 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?Oops. I meant to say above 400 nm.
poster:Dave001
thread:9730
URL: http://www.dr-bob.org/babble/20041228/msgs/436183.html