What Happens If You Leave Hyperthyroidism Untreated?

What Happens If You Leave Hyperthyroidism Untreated? If left untreated, hyperthyroidism can cause serious problems with the heart, bones, muscles, menstrual cycle, and fertility. During pregnancy, untreated hyperthyroidism can lead to health problems for the mother and baby. The thyroid is a small gland in your neck that makes thyroid hormones. Does hyperthyroidism get worse