what is thyroid do
Your thyroid is a small gland at the base of your neck that makes thyroid hormone. Thyroid hormone controls many activities in your body, including how fast you burn calories and how fast your heart beats.Diseases of the thyroid cause it to make either too much or too little of the hormone.ypothyroidism is treated with medicine that gives your body the thyroid hormone it needs to work normally. The most common medicines are man-made forms of the hormone that your thyroid makes. You will likely need to take thyroid hormone pills for the rest of your life.