I posted my 25-hydroxyvitamin D test results a while back as part of the GrassRoots Health program. The result was 98 (two years earlier it had been 7). That increase was from supplementing 14,000 IU daily. Now I am taking 8000 IU on even-numbered days and 10,000 IU on odd-numbered days, so see how I maintain.

Question is: If normal range on test is listed as 32 to 100 and "between 50–80 ng/mL (or 125–200 nM/L) year-round" quoting post below is optimal then what is the 80 to 100 range? Should I try to get my level down to a maximum of 80? And if that is so, why?

Thanks.