The Radiation Health Management Division and the National Institute of Radiological Sciences have jointly publicized the English version of the booklet, with cooperation of a group of experts, so that foreign nationals residing in Japan or visiting Japan or those interested in Japan can obtain basic knowledge on health effects of radiation and correctly understand changes in circumstances and efforts being made in Japan. As terms used in this field are highly professional and difficult, we also prepared a glossary. We would like to extend our gratitude to the people who offered cooperation in checking the translation and preparing the glossary.
The booklet is also available on the website of the Ministry of the Environment, from which you can download the content for use in training and classwork. We hope that this booklet will be utilized in diverse occasions.
https://www.env.go.jp/en/chemi/rhm/basic-info/1st/introduction.html

This section introduces the current conditions of radiation doses and the effetc of radiaion on health.
https://www.env.go.jp/en/chemi/rhm/portal/index.html