This episode explores the complex relationship between iodine and the thyroid gland, focusing on the Wolff-Chaikoff effect and the Jod-Basedow phenomenon. We break down the molecular mechanisms of iodine-induced thyroid suppression, the critical sodium-iodide symporter downregulation that allows normal tissue to escape prolonged hypothyroidism, and the triggers for iodine-induced thyrotoxicosis in autonomous glands. Finally, we review the management of modern triggers like contrast media, amiodarone, and therapeutic applications in thyroid storm.


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