According to a report by the Japanese national broadcaster, NHK, around half of 1149 children tested in Fukushima prefecture have radioactive iodine in their thyroid glands.
据日本国家广播公司NHK报道，福岛县1149名儿童中有半数在甲状腺中检测出放射性碘。
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Radioactive iodine in food is of immediate concern, but it has a relatively short half-life and will naturally decay over a short time frame.
食品中的放射性碘直接引起人们的关注，但是它的半衰期相对较短并将在短时间内自然衰变。
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For instance, because it takes only 8 days for the radioactive isotope iodine-131 to decay away to half its original level of radioactivity, simply waiting should be a fix.