Our Health Library information does not replace the advice of a doctor. Please be advised that this information is made available to assist our patients to learn more about their health. Our providers may not see and/or treat all topics found herein.
The thyroid is a butterfly-shaped gland that lies in front of the windpipe (trachea), just below the voice box (larynx). The thyroid gland uses iodine from food to make two thyroid hormones: thyroxine (T4) and triiodothyronine (T3). The thyroid gland stores these hormones and releases them as they are needed.
Current as of: March 1, 2023
Author: Healthwise Staff Medical Review: E. Gregory Thompson MD - Internal Medicine Kathleen Romito MD - Family Medicine Matthew I. Kim MD - Endocrinology
Medical Review:E. Gregory Thompson MD - Internal Medicine & Kathleen Romito MD - Family Medicine & Matthew I. Kim MD - Endocrinology