How does radioactive iodine-131 destroy thyroid cells?

Radioactive Iodine Therapy1 min readUpdated June 12, 2026

What the Evidence Shows

We analyzed the available evidence and found that radioactive iodine-131 destroys thyroid follicular cells by emitting ionizing radiation that damages their DNA and cellular structures [1]. This happens because the thyroid naturally absorbs iodine to make hormones, and when iodine-131 is taken in,...

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Published
June 12, 2026·Last updated June 12, 2026
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