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.

Hi Sue: That is great you and your doctor figured out what s causing your low D level.

I have a friend with Lupus who has fatty liver too and most likely is low on D too. I will let her know your discovery.

Keep us posted. Hope losing weight will do the trick.

Shari