Dr. Oz discusses what a healthy thyroid gland does for the body. In this video, Dr. Oz. explains two do-it-yourself tests to see if the thyroid is working correctly.
The thyroid is a butterfly-shaped gland at the base of the throat that regulates metabolism. Hypothyroidism (underactive thyroid) slows down metabolism and can cause weight gain. Learn about hypothyroidism's other symptoms and treatment.
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