Thyroid Disorders

The thyroid gland, an endocrine gland located in the neck just below the Adam's apple, produces hormones that play a key role in regulating blood pressure, body temperature, heart rate, metabolism and the reaction of the body to other hormones. The two main hormones produced by the thyroid are thyroxine and triiodothyronine. It also produces calcitonin, which stimulates bone cells to add calcium to bone and regulate calcium metabolism ism and others having “slow” metabolism.

Hormones of the Thyroid

The two main hormones the thyroid produces and releases are T3 (tri-iodothyronine) and T4 (thyroxine). A thyroid that is functioning normally produces approximately 80% T4 and about 20% T3, though T3 is the stronger of the pair.

Diseases and Disorders of the Thyroid

There are many diseases and disorders associated with the thyroid. They can develop at any age and can result from a variety of causes—injury, disease, or dietary deficiency, for instance. But in most cases, they can be traced to the following problems: Too much or too little thyroid hormone (hyperthyroidism and hypothyroidism, respectively). Abnormal thyroid growth