Abstract
The atomic bomb against Hiroshima and Nagasaki, the fifth Lucky Dragon incident by the hydrogen bomb test at Bikini Atoll, in addition Japan also received the baptism of the radiation accident and four times of the Fukushima nuclear power plant, a lot of people with a strong radiation allergy. On the other hand, hot springs erupted in various places as a characteristic of Japan, which was blessed with the volcano, long-term care, in particular the effect of the Radium Hot Springs was recognized for a long time in the spa. Since the accident of Tokyo Electric Power Company, the food radiation contamination is greatly rumored, there is a problem of internal exposure of low doses. However, for exposure of low doses, without yet stated dogma, several different descriptions have been made. An overview of such current situation, along with the review of the theories about the health effects of low-dose radiation, to introduce the latest research achievements in Misasa hot spring which is a famous radon hot springs. Finally, we propose the importance of be regarded as uncertainty problem transformer science that does not melt them scientifically.
