i have read that it plays an important role in cancer prevention and also in flu prevention and that these things are starting to have scientific backup.

I was tested a while ago and had a very low level of vit D, doc put me on a lot of supplements. I have continued to take them and I always will now, at 2000 units a day.

they reckon that 2/3 of people in aus are vit d deficient and thats in a country with plenty of sun....