I also wanted to ask about parathyroid tumors, anyone had any removed? One Dr suggests looking for a tumor even if the levels seem normal another says no. I have found some pretty convincing literature that suggests the surgery is almost micro surgery and that many people with no sign of tumors(benign)even with ultrasound still had tumors and felt better when they were removed. The suggestion is that the tumors inadvertently cause the vit d to drop not the other way around. Any thoughts?