See, this is the thing. I was only urging those who choose to supplement with D3 to do so with the knowledge of some labs under their belt. I am also being treated for D3 deficiency, as a result of an autoimmune disorder, and know how tricky it is to supplement in the right increment to bring the number into the proper range.

I am deficient, and a daily dose of 5,000 was enough to put me well above the upper limits. I dropped the daily dose to 1,000 IU, and that seems to be right for me.

Everyone is different. Be wary of catch-all advise, and supplement with this quasi-hormone, at least with higher dosages, under a doctor's recommendation.