Hypothyroidism is the disease state in humans and in animals caused by insufficient production of thyroid hormone by the thyroid gland.
Causes
Thyroid is a butterfly shaped gland in the neck. Its purpose is to regulate metabolism of the body. In healthy people, the thyroid makes just the right amounts of two hormones, T4 and T3, which have important actions throughout the body. These hormones regulate many aspects of our metabolism, eventually affecting how many calories we burn, how warm we feel, and how much we weigh. In short, the thyroid “runs” our metabolism.
HYPERTHYROIDISM
Hyperthyroidism is the medical term to describe the signs and symptoms associated with an over production of thyroid hormone. It is a condition caused by the effects of too much thyroid hormone on tissues of the body.