The main function of the thyroid gland is to regulate the body’s metabolism through the production of hormones, primarily thyroxine (T4) and triiodothyronine (T3). These hormones influence various physiological processes, including growth, energy production, and temperature regulation. Proper functioning of the thyroid is essential for maintaining homeostasis, and imbalances can lead to disorders such as hypothyroidism or hyperthyroidism. The thyroid also plays a role in the body’s response to stress and metabolic rate.