21 巻 (2011) 3 号 p. 169-174
After the crisis of Fukushima Daiichi nuclear reactors, the media started to broadcast comments of radiation doctors and researchers saying “there is no harm up to 100mSv”, “it would be worse for your health if you do not take proper amount of exercises or green vegetables by avoiding radiation”, “smoking is much worse than the current levels of radiation”, some of them were totally against the decades-long efforts of the toxicologist who have been campaigning the harmful effects of smoking, poor exercise, low vegetable intake, etc. These comments can be given as a “Mund Therapie” given by a doctor to a patient in a hospital, only to the people who were, unfortunately, exposed to radiation. The source of confusion of the public was such a sudden change in radiation risk information which is very different from ICRP-based radiation protection guidance. Here, differences and similarities of radiation and chemical in biology, risk assessment, risk management and risk communication are briefly discussed as a starter for a closer interaction between radiation and chemical biologists/scientists/regulators.