The doctor has a slide presentation on radiation in Fukushima Prefecture on his website and this is his conclusion:
Conclusion: A small radiation is good for your health
There are two sides to radiation.
Small dose: Like an angel's smile (even at 50 millisieverts/year)
Large dose in short time: Like a devil's violence
From now on, the number of cancer patients in Fukushima will decrease.
Food items with a small amount of radiation will fetch "premium".
Fukushima Prefecture will be the Number One health land in Japan, and people will flock to Fukushima.
Our future is bright.
Like Disneyland, I suppose.
His conclusion is that Fukushima has "an angel's smile", i.e. almost harmless, if not beneficial, small amount of radiation.
Looking at his presentation, he seems to have come to the conclusion because:
Fukushima has received a small amount of radiation when it rained on March 15 and radioactive iodine and cesium that were in the air fell on the ground with the rain because of the events on March 14 and 15 (Reactors 2, 3, 4 had explosions) that released a relatively large amount of radioactive materials;
Now it's mostly only cesium on the surface emitting gamma rays;
They will never know the radiation exposure level in Fukushima until actually measured;
There are people living in the places with high radiation; and
There are data to prove that the long-term radiation exposure of 50 millisieverts/year decreases the number of cancer cases.
He tells us to just think of it as soaking in a radium [radon] hot spring (hormesis effect), particularly if we're over 40.
Still, the doctor thinks that the community should do everything to protect children. His suggestion? Surround them with lead panels that will block radiation. (Lead poisoning anyone?)
What we can do for children:
Remove surface soil from schoolyards.
Put up lead panels on classroom walls.
Shorten the commute time to and from school.
Drive children to school, and school should allow cars inside the school gate.
Shield children's room in the house with lead.
Shield children's bed with lead.
If these measures cannot avoid 1 millisievert/year radiation exposure, then consider relocating children.
It seems to me to be infinitely better not to use lead panels around children and simply relocate them first, but I am no doctor.