It's been 18 months since the Fukushima nuclear disaster contaminated much of the prefecture and beyond, and reports are still coming in about radiation in food exceeding the government limit.

In late August, Tokyo Electric Power Co. announced that heavily contaminated "ainame" (greenlings) had been caught in the Pacific within 20 km of the crippled Fukushima No. 1 power plant. Earlier this month, sweet chestnuts from Tochigi Prefecture were found tainted with cesium beyond the government's limit of 100 becquerels per kilogram.

Is it too early to stop being concerned about eating fish, meat and vegetables grown by Fukushima and neighboring areas?