Although this research is interesting, it isn't widely accepted yet. All major authorities still contend that there's not enough evidence to prove that low doses of radiation aren't harmful:
To the best of my knowledge no major authority believes the LNT, the threshold model or the radiation hormesis model to be proven.
That said the French Academy of Sciences & National Academy of Medicine did cite the exact same study of Taiwanese people as well as a large number of laboratory studies in its 2005 report that criticized the LNT model.
In any case I wouldn't be worried in the least if I were in Tokyo right now.
That said the French Academy of Sciences & National Academy of Medicine did cite the exact same study of Taiwanese people as well as a large number of laboratory studies in its 2005 report that criticized the LNT model.
In any case I wouldn't be worried in the least if I were in Tokyo right now.
http://en.wikipedia.org/wiki/Radiation_hormesis