The thyroid is a butterfly-shaped gland that resides at the base of the neck and produces hormones that regulate metabolism (how the body converts food into energy). Abnormal production of thyroid hormones results in thyroid disease. Two main causes of thyroid problems are overproduction of thyroid hormones,

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Tinnitus is a ringing or swishing noise in one or both ears that originates inside the ear or head. Most people will experience tinnitus at some juncture in their lives. While it is not harmful, the sound can be disturbing, particularly in chronic cases. Tinnitus is usually a symptom of some other

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