Posted by Larry Hoover on February 14, 2005, at 14:28:18
In reply to Re: Vitamin D is likely better than a lightbox for SAD, posted by Elainep on February 7, 2005, at 0:01:51
> Okay, so the first thing I went looking for was a vit D only supplement, and one based on Vit D3 (the fish based vit) rather than Vit D2 (the plant based vit). Vit D2 isn't as powerful or as good for whatever reason. Vit D2 (ergocalciferol I think its called) is the one they use in fortified milk and bread and orange juice etc, but it's not as powerful. I read that several times in my research, I'll go back and try to find my references and in my next post I'll try to give all the Vit D 'good' references I have, because of course my interpretation is only secondhand.
As an aside, all of the toxicity issues of vitamin D toxicosis were from studies of supplemental D2 (ergocalciferol), and those studies are decades old. Those findings were generalized to vitamin D3 *without scientific evidence to support that extrapolation*.
Megadoses of vitamin D3 are not associated with toxic reactions, absent predisposing health factors (as Elaine mentioned, e.g. hypercalcemia).
Lar
poster:Larry Hoover
thread:451955
URL: http://www.dr-bob.org/babble/alter/20050131/msgs/457691.html