DEAR DR. ROACH: I am a male who is 58 years of age. I recently had an MRI of my cervical spine, and just this month, I had a CT scan of my whole abdomen. Since then, I have had symptoms of dry eyes, weight loss and insomnia. I wondered if the contrast dye used for the MRI or CT scan can cause hyperthyroidism, as these are common symptoms for excess thyroid hormone. Do you think...
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