Professor Emeritus of the University of Tokyo
Professor Emeritus, National Graduate Institute for Policy Studies
Distinguished Professor of Tokai University (2019-)
Special Advisor, Hiroshima University (2019-)
Chairman, Health and Global Policy Institute
Chairman, the Fukushima Nuclear Accident Independent Investigation Commission (NAIIC) by the National Diet of Japan (2011-12)
Member of G8 World Dementia Council (2014-) and Vice-Chair (2021.6-)