• O. Niwa O. Niwa
  • R.L. Ullrich R.L. Ullrich
  • K. Kodama K. Kodama

At this time of change in leadership, we are pleased to offer our greetings to all of you.

The Radiation Effects Research Foundation (RERF), a binational research organization funded by the governments of the United States and Japan, investigates the health effects of atomic bomb radiation among A-bomb survivors in Hiroshima and Nagasaki. The results of RERF research thus far on the health effects of radiation demonstrate a quantitative association between radiation dose and health risks and have earned the trust of numerous international organizations such as the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). RERF research results have been used as the foundation for policy development in countries throughout the world in terms of safety measures for radiation workers. Our results have also been used in the formulation of guidelines to protect the general public from unnecessary radiation exposure in medicine, such as in cases of diagnostic radiation or radiotherapy, although our role in this regard is not as widely known.

These results—instrumental both at the national policy level and in the everyday lives of citizens—are the fruit of ceaseless efforts by RERF researchers and staff. At the same time, the results are made possible only with the understanding and support of A-bomb survivors and others at the national and local levels. A-bomb survivor participation in health examinations over many years has provided RERF with health data as well as blood and other biosamples. We believe that the valuable results RERF has obtained from its research on these individuals who experienced the unprecedented A-bomb tragedy should be shared globally as a precious world heritage similar to the Atomic Bomb Dome.

RERF continues to this day to study the biosamples and other health data provided by the A-bomb survivors. These invaluable materials must be examined with the highest levels of scientific expertise. RERF must therefore gather technical knowledge from throughout the world, not just the U.S. and Japan. Moreover, it is not enough for us to simply announce our results to the world; we also need to convey to the A-bomb survivors and general public the significance of our results to society, specifically how and where that information is being utilized. In addition to such research considerations, we must carry out our work while paying constant attention to the various human issues facing the aging A-bomb survivors.

We conclude these greetings by expressing our earnest desire to fulfill RERF’s responsibilities in ever closer cooperation with the A-bomb survivors.


Ohtsura Niwa, Chairman/Representative Director
Robert L. Ullrich, Vice Chairman and Executive Director
Kazunori Kodama, Executive Director