Potassium iodide (KI) and potassium iodate (KIO3) are called thyroid blockers when used in radiation protection.World Health Organisation (2011) Use of potassium iodide for thyroid protection during nuclear or radiological emergencies
If a person consumes a dose of one of these chemical compounds, his or her thyroid may saturate with stable iodine, preventing accumulation of radioactive iodine found after a nuclear meltdown or explosion.
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