From your article:
That amount of radiation isn’t likely to have much of an effect on humanity, however, and in comparison to the normal amount of radiation each of us receives over the course of a year, which can be as high as 3.65 millisieverts on average, it’s hardly anything. In fact, as NewScientist notes, a typical CT scan exposes you to 15 millisieverts on its own, and radiation sickness doesn’t occur until you reach the 1,000 millisievert threshold.
Obviously, those living the the vicinity of the reactor, especially in the immediate aftermath of the meltdown, can expect to have received a good deal more radiation as a result, but the researchers still believe the overall exposure to have been negligible in the grand scheme of things.
I hope they are right for everybody's health in Japan. Somehow I don't trust the government nor their scientists anymore. Its always is a lot worse than they report so as prevent people from panicking if they knew the truth. Remember the goverment is a class of rulers who care about themselves. If there was mass emigration from Japan to escape the on-going radiation fallout, the governement's power would be weakened.