Excessive or deficient secretion of thyroid hormones in the body is called hyperthyroidism and hypothyroidism.
The thyroid is a small gland situated in the midline and base of the neck. The gland produces thyroid hormones T4 (Tetraiodothyronine/Thyroxine) and T3 (Triiodothyronine) that are absolutely essential for maintaining the harmony of various body functions. Thyroid hormones govern the speed of the body’s chemical reaction and have a positive influence on the growth of an individual (mental and physical). Because thyroid hormones affect growth, development and many cellular processes, an excess, as well as deficiency of thyroid hormones, has widespread consequences on the health of the individual.