In his book _The Vitamin D Solution_, Dr. Michael Holick ( the discoverer of the active form of Vit-D) debunks this myth with data. I haven't read most of it, but it looks interesting.
Thanks, I have his older book- I will see if he mentions that in there. I think either way it would be a safer bet to take D3- it seems everyone (including Holick I presume) is in agreement that D3 is a perfectly good form of vitamin D.
In his book _The Vitamin D Solution_, Dr. Michael Holick ( the discoverer of the active form of Vit-D) debunks this myth with data. I haven't read most of it, but it looks interesting.