“The thyroid gland is a small, butterfly shaped organ located in the base of the neck, just below the Adam’s apple. It plays a crucial role in regulating the body’s metabolism, heart rate, and temperature. The thyroid produces two main hormones, triiodothyronine (T3) and thyroxine (T4), which are essential for various bodily functions. These hormones are produced in the thyroid follicles, which are filled with colloid, a sticky fluid that contains iodine. The thyroid gland’s health is vital for the overall well-being of the body, influencing the function of many organs, including the heart, brain, liver, kidneys, and skin.“
Cleveland Clinic (Thyroid Disease: What It Is, Causes, Symptoms & Treatment)