There was a very good show rather class lecture on University of Cal TV last week on the benefits of Vit D, and what is becoming more and more evident of problems from the lack of it.
Cancers of all types, especially prostate cancer, diabetes, and a host of other "diseases".
They started looking at why black men , especilly those up north, had higher rates of prostate cancer than whites. Found that neither got anywhere near enough, but black people , because of their pigment, got the least.
They NOW are recommending for everyone, at least 15 minutes of direct sun exposure on your bare arms, and legs between the hours of 10 and 2 every day.
Pretty difficult for those who work jobs, but we should all try. They also recommend that if you live above some line they drew on a map that looked kinda like it came through middle Tn, but I couldn't see it that good, that you take a Vit D supplement.
Enough sun in the summer is not a problem for me, but I do take Vit D tabs in the winter.
LMM, that debate over embryonic stem cells as to whether to destroy them (flush them down the toilet) or use them to try to cure devastating diseases , in my opinion should never have happened. Just plane dumb, but I will admit I saw someone in my wife's family die from Hunningtons, and it seems if they could cure that, or other horrible diseases, that is a lot more important than some religious nutcase's unfounded concerns.
This may , like you said, be good news on that front, but I believe they should continue on all fronts to look for cures.