The thyroid is one of the larger endocrine glands in the body.
It is a double-lobed structure located in the neck and produces hormones, principally thyroxine (T4) and triiodothyronine (T3), that regulate the rate of metabolism and affect the growth and rate of function of many other systems in the body.
The hormone calcitonin is also produced and controls calcium blood levels.
Iodine is necessary for the production of both hormones.
Hyperthyroidism (overactive thyroid) and hypothyroidism (underactive thyroid) are the most common problems of the thyroid gland.
For more information about the topic Thyroid, read the full article at Wikipedia.org, or see the following related articles:
Editor's Note: This article is not intended to provide medical advice, diagnosis or treatment.
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