When one burns wood or coal to produce heat, toxins are released in the form of smoke. The same happens when your body burns food for energy. This process is called metabolism and the toxic molecules produced as a result are called free radicals.
hormones, thyrotropic (thyroid-stimulating hormone [TSH]), n a pituitary hormone that regulates the growth and activity of the thyroid gland.ormones, thyrotropic (thyroid-stimulating hormone [TSH]), n a pituitary hormone that regulates the growth and activity of the thyroid gland.
Four hormones are critical in the regulation of thyroid function: 1  Thyroxine (T4) and Triiodothyronine (T3). Thyroxine (T4) is the key hormone produced in the thyroid gland. 2  Thyrotropin. Thyrotropin (also called thyroid-stimulating hormone or TSH) is another very important hormone in the process.