Doctor of Veterinary Medicine, Hokkaido University, Sapporo, Japan, 1971. Master of Science, Hokkaido University, Sapporo, Japan, 1973. Doctor of Philosophy, Hokkaido University, Sapporo, Japan, 1985.
Research associate Tottori (Japan) University, 1974-1977. Researcher Eisai, Tokyo, 1979-1985. Research associate University Kansas, Kansas City, 1986-1988, Harvard University, Cambridge, Massachusetts, 1988-1991.
Vice president Laboratory Animal Center Toyama (Japan) Medical & Pharmaceutical University, since 1991.
President Society Minamitaikouyama, Kosugi, 1981. Member New York Academy of Sciences, Japanese Society Biochemistry (trustee since 1990), Japanese Society Diabetes.
Married Hiroko Yamamoto, June 2, 1983. Children: Yoshinori, Chika.