question: I wonder the hyperthyroidism can be changed to the cancer Hello. I have had the hyperthyroidism since 14and I'm 19 now. I'm taking a hormon drug until nowbut my hormon dgree is going to be normal,and a dosage is decreased.  umm... my disease is transmitted from the mother's family recently, I have proded my thyroid and suffer(not so hard pain) I was heard the hyperthyroidism can be changed to the cancerSo I wonder it is true and what is proper care for my disease