A cesium-137 's half-life official calls the food safety situation `` more serious '' than third thought . Peter Cordingley , the Manila-based spokesman for the WHO 's regional office for the Western Pacific , said his organization believes people in Japan `` have to be cautious '' about what they eat and drink . `` I 'm definitely thinking about '' possible radiation in food , a Japan says . High levels of radioactive iodine and cesium have been found in milk and spinach . The 46 prefectures affected include some of Tokyo 's most productive farmland .
A cesium-137 's half-life official calls the food safety situation `` more serious '' than third thought . `` I 'm definitely thinking about '' possible radiation in food , a Japan says . High levels of radioactive iodine and cesium have been found in milk and spinach . The 46 prefectures affected include some of Tokyo 's most productive farmland .