1945 Born in Hiroshima
1974 Graduated from Postgraduate Corse of Okayama Univ. Medical School
1974 Assistant Professor, Kumamoto University Medical School
1980 Associated Prof of Medicine, Albert Einstein College of Medicine
1982 Professor, Tufts University of Medical School
1992 Professor, Osaka City University Medical School
2011 Emeritus Professor, Osaka City University
2011 Vice Dean, Miyagi University
2013 Dean, Health Science Laboratory, Osaka
2015 Outside Director, Kirindo Co., Ltd.
2019 Council Member of the Intestinal Flora Transplant Clinical Research Group, Symbiosis Research Institute & Director of FMT Clinic (until 2020)
2021 Academic Advisor, Kirindo Holdings Co., Ltd.