The thyroid gland, located at the base of the throat, produces hormones to help control body temperature and energy level.
Thyroid diseases are primarily conditions that affect the amount of hormone produced by the thyroid. These diseases do not usually require surgery.
Thyroid nodules, which are lumps of tissue in the thyroid gland, also are common.
The best way to know if you have a thyroid nodule is to make sure your doctor does a neck exam at least once a year.