There was a bit of research just recently that I believe was posted here about the RDA values for vitamin D being far lower than they ought to be due to statist

There was a bit of research just recently that I believe was posted here about the RDA values for vitamin D being far lower than they ought to be due to statistical errors in past studies. The errors resulted in underestimating the levels of vitamin D necessary to avoid negative health effects pretty dramatically, and they recommended changes to health and diet recommendations ASAP. I believe that they estimated that most people should probably be taking 10,000 IU/day supplementally. Personally I was diagnosed as vitamin D deficient a few years ago and my doctor prescribed gelcaps that were 50,000 IU to be taken twice a week. Upon switching doctors, my new doctor noted the deficiency in my records and said that she recommends everyone in my state (West Virginia) take vitamin D supplements as nearly everyone is deficient. And that was by the older, lower, standard. She didn't renew my prescription but I have begun taking 10,000 IU/day OTC supplements, especially after reading that research I've been considering doubling up.