Wow. They are already handing out Potassium Iodide to people in Japan because of the nuclear plant explosion.
Potassium Iodide only protects the thyroid, which is most sensitive to radiation. It doesn't protect the rest of the body.
Then again, as a preventative measure it's definitely a good thing.
I know that the news say that they are trying to prevent a nuclear meltdown, but if they're already providing people with iodine then the meltdown already happened because of that explosion. There is no way for them control the amount of radiation that has already been released out into the environment.
