In the front of the neck, right below the Adam's apple, the thyroid is a tiny, butterfly-shaped gland. It is a crucial component of the endocrine system, which creates hormones that control many biological activities. The thyroid gland's main job is to make thyroid hormones and release them into the blood.
The thyroid hormones, mainly thyroxine (T4) and triiodothyronine (T3), play a crucial role in maintaining the body's metabolism, growth, and development. They help regulate how the body uses energy, control the production of proteins, and influence the functioning of various organs and tissues.
The pituitary gland, a little gland found near the base of the brain, controls the release of thyroid hormones. TSH, which is produced by the pituitary gland, tells the thyroid gland to start making and releasing thyroid hormones.