Preface: I take very seriously any warning about consuming a product which is important for the local economy. But when a respected radiation expert issues this type of warning, I have to pass it on.
I wrote to radiation expert Dr. Chris Busby to ask him if he thought people living outside of Japan should take any actions to try to reduce their radiation exposure:
Epidemiologist Dr. Wing thinks people outside of Japan shouldn't do anything to attempt to reduce radiation exposure: Leading Epidemiologist: Instead of Trying to Avoid Japanese Radiation, Put Your Energy Into Demanding a Saner Energy Policy
But the French anti-nuclear NGO CRIIAD says that pregnant women and infants should take steps to reduce exposure: French Nuclear Group Warns that Children and Pregnant Mothers Should Protect Themselves from Radiation
I've also researched the scientific literature, and found that antioxidants can help a little: Can Vitamins or Herbs Help Protect Us from Radiation?
What's your advice for people outside of Japan?
Professor Busby replied:
I attach my "don't panic" paper. However, since then I have re-thought this advice as the thing is still fissioning and releasing 10 to the fourteen becquerels a day. This will mean that Sr-90 [strontium 90] and Uranium and particulates will be building up in the USA and Europe. I will assess this later but for now I think it prudent to stop drinking milk. I also attach the particulates note.
Busby - Fukuparticles2
Busby - Dont Panic
Disclaimer: I am not a health professional or radiation expert.