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Furthermore, reviewing their medications and possible dietary supplements is important, as several medications can affect thyroid hormone levels. [ 14 ] Levothyroxine is also used to treat subclinical hypothyroidism , which is defined by an elevated TSH level and a normal-range free T 4 level without symptoms. [ 14 ]
It is the primary form of thyroid hormone found in the blood and acts as a prohormone of the more active thyroid hormone, triiodothyronine (T 3). [1] Thyroxine and its active metabolites are essential for regulating metabolic rate , supporting heart and muscle function , promoting brain development , and maintaining bone health .
In thyroid cancer or Graves' disease, ablation therapy with radioactive iodine (131 I) can be used to remove trace thyroid tissue that may remain after thyroidectomy (surgical excision of the gland). For 131 I therapy to be effective, the trace thyroid tissue must be avid to iodine, which is achieved by elevating the person's TSH levels. [6]
Levothyroxine, a drug used to treat hypothyroidism, can lead to reduced bone mass and density in older adults with normal thyroid levels, a small cohort study has shown.
Desiccated thyroid has been used since the late 1800s. [3] It is usually made from pigs, sheep, or cows. [4] It is available as a generic medication. [1] In 2022, it was the 137th most commonly prescribed medication in the United States, with more than 4 million prescriptions. [5] [6] Usage has decreased since the 1960s. [3]
Thyroid hormone replacement with levothyroxine treats hypothyroidism. [3] Medical professionals adjust the dose according to symptoms and normalization of the thyroxine and TSH levels. [3] Thyroid medication is safe in pregnancy. [3] Although an adequate amount of dietary iodine is important, too much may worsen specific forms of hypothyroidism ...
Thyroid diseases are highly prevalent worldwide, [10] [11] [12] and treatment varies based on the disorder. Levothyroxine is the mainstay of treatment for people with hypothyroidism, [13] while people with hyperthyroidism caused by Graves' disease can be managed with iodine therapy, antithyroid medication, or surgical removal of the thyroid ...
This medication may also be prescribed to people with overweight who have a weight-related condition like type 2 diabetes, high blood pressure (hypertension), or dyslipidemia (high cholesterol or ...