Causes of elevated alanine aminotransferase in hyperthyroidism

  Hyperthyroidism with elevated alanine aminotransferase (ALT) is usually caused by excessive secretion of thyroid hormones or side effects from antithyroid medications. The specific reasons are as follows:
　　1. Excessive thyroid hormone secretion
　　When patients with hyperthyroidism produce too much thyroid hormone, the hormone enters the bloodstream and affects various systems and organs in the body. Thyroid hormone promotes metabolism, and when metabolism becomes excessively high, the liver is affected. This leads to accelerated cellular metabolism and damage to liver cells. As a result, some patients may develop elevated ALT levels.
　　2. Antithyroid medications
　　Commonly used antithyroid drugs include methimazole tablets and propylthiouracil tablets. In some individuals, these medications can cause liver cell damage, resulting in elevated ALT levels. In such cases, patients should promptly seek medical care for liver-protective treatment to prevent further increases in ALT levels and more serious harm to the body.
　　When patients experience elevated ALT levels due to hyperthyroidism, they should promptly visit a hospital for diagnosis and treatment to prevent worsening of the condition and greater bodily damage.