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Learn about thyroid hormones

How Your Thyroid Works

Your thyroid gland is a small gland, normally weighing less than one ounce, located in the front of the neck. It is made up of two halves, called lobes, that lie along the windpipe (trachea) and are joined together by a narrow band of thyroid tissue, known as the isthmus.

Thyroid Gland Function

Some information on this page is a little more advanced. If you have trouble understanding the process of normal thyroid function, please go to our page describing this process first.

Diagnosing Hyperthyroidism: Overactivity of the Thyroid Gland

The actual diagnosis of hyperthyroidism is easy to make once its possibility is entertained.
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