Doctor of Medicine, Doctor of Philosophy, Wakayama Medical University, Japan, 1970.
Assistant professor Wakayama Medical University, 1973—1982, associate professor, 1982—1989, professor, chairman first department medicine, 1989—2005, vice president University Hospital, 1998—2000, president Japan, since 2005. Research associate University Chicago, 1984—1986.
Member of Japanese Constitutional Medicine (president 2001).
Married Tomoko Tsutsumi. Children: Shigeki, Sakiko.