"Deficiency disease" in this context and Vitamin D means rickets. And in addition to a one-a-day multivitamin multimineral tablet (split in two, each half in a

"Deficiency disease" in this context and Vitamin D means rickets. And in addition to a one-a-day multivitamin multimineral tablet (split in two, each half in a different meal to improve absorption), I separately take 5,000 IU spread across all my meals, which has got my blood levels up to what they apparently should be. That's all the vitamin and mineral supplementation I take.