New research shows rec. daily intake of Vitamin D may be underestimated by 10x

[slinsane]

My doctor says he doesn't even test most people because they are always low. He tested me and I was almost severely deficient. He always recommends at least 2-5 thousand a day for a year and then test you. I think it is important to point out cholecalciferol which is the activated vitamin d. No sun required.

 

[Hanzo]

That's true, even when you do absorb UVB rays you still need cholesterol for dermal synthesis of vitamin D. Vitamin D is fat soluble.