Why does weight gain occur in hyperthyroidism?
Mar 02, 2022
Source: Cainiu Health
Dr. Zhang Nan
Introduction
Weight gain in patients with hyperthyroidism typically occurs after initiation of treatment; such weight gain generally indicates that the disease is under control. During antithyroid drug therapy, close monitoring of complete blood count (CBC) and liver function tests is essential to promptly detect potential drug-related adverse effects. The standard duration of drug therapy for hyperthyroidism is 1.5 to 2 years; premature discontinuation or self-termination of medication significantly increases the risk of disease relapse.
Hyperthyroidism generally refers to thyrotoxicosis—a clinical syndrome caused by excessive production and release of thyroid hormones by the thyroid gland. This leads to hypermetabolism and sympathetic nervous system overactivity, resulting in symptoms such as palpitations, excessive sweating, increased appetite and bowel movements, and weight loss. So why do some patients with hyperthyroidism experience weight gain? The following addresses this question.
Why Do Some Patients with Hyperthyroidism Gain Weight?
Weight gain in patients with hyperthyroidism typically occurs after initiation of treatment. Such weight gain usually indicates that the disease is coming under control.
There are three primary treatment modalities for hyperthyroidism: antithyroid medications, radioactive iodine-131 (I-131) therapy, and surgery. All three approaches can effectively cure hyperthyroidism, each with distinct advantages and disadvantages. Treatment selection should be individualized based on patient-specific factors and personal preferences. Currently, in China, most patients initially opt for pharmacologic therapy. First-line antithyroid drugs include methimazole and propylthiouracil.
During drug therapy, close monitoring of complete blood count (CBC) and liver function tests is essential to promptly detect potential adverse drug reactions. The standard duration of antithyroid drug treatment is 1.5 to 2 years. Premature discontinuation or self-termination of medication significantly increases the risk of disease relapse. For patients experiencing recurrence, reinitiation of drug therapy remains an option; alternatively, I-131 therapy or surgical intervention may be considered.
The above outlines the reasons behind weight gain in patients with hyperthyroidism. We hope this information is helpful to you.
