Thyroid Hormone Replacement Dosing after Bariatric Surgery in Patients with Primary Hypothyroidism and Severe Obesity: Tehran Obesity Treatment Study (TOTS)

Obesity and hypothyroidism are common medical conditions that are associated with each other. Bariatric surgery (BS) is a common approach used to achieve substantial weight loss in obese patients. However, there is limited evidence regarding the need for postsurgery levothyroxine (LT4) dose adjustment in patients with hypothyroidism undergoing BS.