What is affected by the removal of the thyroid gland?

The removal of the thyroid glands would result in the person not being able to produce T3 (triiodothyronine), T4 (thyroxine), and calcitonin. These three hormones are essential to maintaining the proper rate of metabolism in the body and the production of bone. In most cases, people choose to have their thyroid removed if they have hyperthyroidism. This can result in a disease called Grave's disease in which the eyeballs protrude. Sometimes this is referred to as 'bug-eyes.' If a person has their thyroid gland removed, they will have to take medication for the rest of their lives in order to maintain proper health.