If you live near a nuclear powerplant, I would recommend you lay in a supply of iodine tablets, available from The American Civil Defense Association in Florida, or SSKI, available from any pharmacy which is a super-saturated solution of potassium iodide.<br>As mentioned, the iodine is taken up by the thyroid gland, saturating the thyroid and preventing the uptake of radioactive isotopes of iodine that are released in nuclear accidents and warhead detonations.<br>The stuff is cheap, the protection priceless.