That was a good post. The article was a good synopsis of what's going on with vitamin D.
I am taking 1000iu twice a day (2000iu daily)
Thoughts on how much someone should be taking??
I can't make recommendations.
If I'm up to date then Dr. Holick is a 2,000IU a day man and Dr. Cannell a 5,000IU a day man. There are too many variables for any blanket recommendation so everyone recommends a blood test to determine need.
I’ve been in the Cannell (and Rheinhold Vieth) camp of 5,000-10,000 i.u./day for a couple of years (when I don’t get 30 minutes of sun - hoping to forestall prostate cancer recurrence). Latest (25-OH D) blood test = 75 ng/mL. Some (not many, mainly in Europe) MD’s/ND’s recommend an upper limit of 200 ng/mL while most are saying 50/100 is best for optimal health.