[Lonthego]

The products aren't really banned by the government per se..you can still buy beef or veggies or whatever from Tohoku if you feel like it..It's just that in around four prefectures right now farmers are not allowed to ship beef etc. anymore..they call it shukka teishi 出荷停止
Which means it wouldn't hit the markets in the first place anyways

Those who fear radiation so much I'm assuming also refrain from international flights, since you get quite a lot more radiation from being that high up in the air that long (in my case 13 hours US East Coast<->Japan) than you do from eating a Japanese diet while living in Japan (excluding Fukushima) for a long period of time.