The thyroid hormone is produced by the thyroid gland. The gland is small butterfly-shaped situated in the front of the neck. The two important thyroid hormones are triiodothyronine (T3) and thyroxine (T4).
This hormone is important for “the body's metabolism." Hence the deficiency of thyroid hormone causes slowing of the metabolism and excess of thyroid hormones increase the metabolism of the body. It affects the energy formation, circulation, immune function, blood sugar regulation, emotional stability, and hormonal balance in your body as well.
Thyroid dysfunction is one of the most common endocrine disorders. The two most common types of thyroid disorders are hypothyroidism (thyroid gland produces less of thyroid hormones) and hyperthyroidism (thyroid gland produces an excess of thyroid hormones).