Doctor of Medicine, Ehime University, 1982. Doctor of Science, Ehime University, 1993.
Physician, Ehime University Hospital, Shigenobu, Japan, 1982-1983; physician, Kurashiki Control Hospital, Japan, 1983-1988; resident, National Cancer Center, Tokyo, 1988-1991; physician, Ehime University Hospital, 1991-1998; physician, Ehime Prefectural Control Hospital, since 1998.
Married Mieko Kihana Daigen, July 3, 1988. Children: Rieko, Toshiomi.