For all those ignorant people in China for bought salt to prevent radiation.
Here's a responsible article we'd like to share with you. The company Real Salt says it's been getting a lot of inquiries about whether the iodine in their salt would help in the event of exposure to nuclear radiation. It's a question spurred by the events in Japan following the massive earthquake of last week, and the resulting problems in the nuclear plant at Fukushima.
The answer is no--the trace amount of iodine in Real Salt, or even table salt, would not be considered a preventative measure to prevent the absorption of harmful radiation. This article from Real Salt explains more, and gives some helpful tips as well. Find it by clicking here.