The lack of thyroid hormones can lead to the malfunctioning of many organs in an individual. Organ systems like central nervous system, digestive, circulatory and hematopoietic systems will not be able to function properly, if our body lacks thyroid hormones. In such situations, patients are given doses of thyroid hormones in the form of pills and these pills are taken on a daily basis. Taking these pills will help in maintaining the normalcy of body metabolism and it will also help in stopping the growth of cancerous cells (mostly by lowering the TSH levels).
When is this treatment prescribed?
The loss of thyroid hormones happens mainly after surgeries like thyroidectomy, when the body becomes incapable of producing these hormones on its own. This is when people have to take thyroid hormone treatment in the form of pills. Even people who had to suffer thyroid cancer are often prescribed this treatment so that the cancer does not re-appear. Thyroid hormone treatment is also given to patients for controlling the thyroid gland from thickening (goiter) or forming lumps (nodules).
Thus, we can say that this treatment is mainly prescribed to patients whose thyroid gland does not function as expected.
How is it prescribed?
The doctor will first run some tests to check the level of TSH in the patient’s body, TSH or Thyroid stimulating Hormone is secreted by the pituitary gland. It stimulates the thyroid gland in a person, and when the gland is stimulated, it creates thyroid hormones. Thus, low TSH level in the body could require a person to receive Thyroid Hormone
The thyroid hormone which is generally prescribed is synthetic in nature and is called synthetic thyroxine or T4. Nowadays, the naturally occurring thyroid hormone triiodothyronine or T3 is not prescribed as it is not as effective as T3.