[Toddsterpatriot]

Taking a large dose of iodine would flush out the radioactive iodine before it gave you thyroid cancer.

More precisely, fill your iodine storage, so radioactive iodine would not be absorbed.

[dynachrome]

I should have noted that it is IODIDE, not iodine as the article had it. CDC sez:

http://emergency.cdc.gov/radiation/ki.asp

“What is Potassium Iodide (KI)?
KI (potassium iodide) is a salt of stable (not radioactive) iodine that can help block radioactive iodine from being absorbed by the thyroid gland, thus protecting this gland from radiation injury.

“The thyroid gland is the part of the body that is most sensitive to radioactive iodine.

People should take KI (potassium iodide) only on the advice of public health or emergency management officials. There are health risks associated with taking KI.

KI (potassium iodide) does not keep radioactive iodine from entering the body and cannot reverse the health effects caused by radioactive iodine once the thyroid is damaged.”