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Hyperthyroidism: Overactivity of the Thyroid Gland
There are several causes of hyperthyroidism. Most often, the entire gland is overproducing thyroid hormone. This is called Graves' disease. Less commonly, a single nodule is responsible for the excess hormone secretion.
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Thyroid Gland
Parathyroid Glands
Adrenal Glands
Diabetes
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Diseases of the Pancreas
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