my new updated answer regarding vitamin D (for me):
though i could be wrong, i think my low D levels and having to take more than the normal person, is due to my fatty liver disease (due to insulin resistance / metabolic syndrome). from every thing i've been reading, a fatty liver can't process the vitamin D (from food or sunlight) properly, hence my needing more.
one of my doctors the other week suggested this as my problem, and as i read, i think, for me, she is correct.
so, i think my low D is due to fatty liver due to insulin resistance.
hoping losing weight will be the ticket for me. time will tell.
Humira (no more methylpred or Aleve?)
vits C, D. probiotics. fish oil. CoQ, Mg, Ca
no dairy (casein sensitivity), limited eggs