What is the primary function of thyroid hormones?

The primary function of thyroid hormones is to regulate metabolism and energy use. Thyroid hormones, primarily thyroxine (T4) and triiodothyronine (T3), play a crucial role in controlling the rate at which the body utilizes energy and produces heat. They influence various metabolic processes, including the metabolism of carbohydrates, fats, and proteins, thereby impacting how energy is generated and consumed within the body.

These hormones also have significant effects on growth and development, as well as on the functioning of nearly every tissue in the body. By adjusting metabolic rates, thyroid hormones help maintain homeostasis in response to the body's changing demands for energy. This is essential for overall health, as proper metabolic function is critical for maintaining weight, energy levels, and general well-being.