Doctor of Medicine, Hiroshima (Japan) University, 1969. Doctor of Philosophy, Hiroshima (Japan) University, 1976.
Medical trainee Hiroshima University, 1970-1973, research associate, 1973-1984, assistant professor medicine, 1984-1995, guest assistant professor Research Institute Nuclear Medicine and Biology, since 1999. Director Hiroshima Thyroid Medical Clinic, since 1995. Research associate University of California at Los Angeles, VA Wadsworth Hospital, 1977-1978.
Visiting research scientist Radiation Effects Research Foundation, Hiroshima, 1978-1980. Registered doctor Hiroshima Prefeccture Hospital, since 1997, Yoshijima Hospital, Hiroshima, 1997-1998.
Councillor Hiroshima-Nagasaki Peace Foundation, since 1996. Member Japanese Endocrine Society (councillor since 1988), Japanese Society Clinical Surgery (councillor since 1997), Society Doctor Junod (consultant since 1991).
Married Keiko Hikida, May 20, 1971. Children: Kaori, Naomi.