…showed first 75 words of 721 total…

…showed last 75 words of 721 total…the pituitary gland or by overactivity of the thyroid gland itself. Other causes include reduced activity of the thyroid gland, so that the gland swells in order to produce more thyroxine. Some types of drugs can produce a goiter. During adolescence or pregnancy, a goiter may appear as the thyroid gland copes with the body's need for more thyroxine. Sometimes a goiter is caused by a tumor on the thyroid gland. Bibliography www.juno.com