Hyperthyroidism is a state of the thyroid. The thyroid is a tiny, shape like a butterfly gland situated at the front of the neck. It produces triiodothyronine (T3) and tetraiodothyronine (T4), which are two essential hormones that control how your cells use body energy.
Read MoreCauses, Symptoms, Diagnosis and Treatment of Hyperthyroidism
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