I was Diag.With Iron deficiency anemia two years ago, treated with Fe SUpps.Then had a Thyroidectimy a year and a half ago, with fluctuating levleing for the thyroid replacement.. I also take Calcium supps-which they finally figured needed to be spread out to not interact with each other. Have not been feeling well, gained weight, very fatigued, moody-- and new Blood tests show HyPO, low FE, and VIt D deficiency??It seems it is all related somehow but not sure HOW? Could you explai it SIMPLY?