With deep sadness, we announce the passing of Professor Hajime Orimo on May 16, 2025, at the age of 90. A highly respected professor at the University of Tokyo and an esteemed member of the IOF Board from 2007 to 2019, Professor Orimo was a pioneering figure in the fields of bone metabolism and geriatric medicine in Japan.

Professor Orimo was President of the Japan Osteoporosis Foundation and also served as President of the Japan Geriatrics Society from 1995 to 2001. He made significant contributions to advancing osteoporosis care, both in clinical practice and in raising public awareness. In his role as an IOF Board member representing the Asia-Pacific region, he played an essential part in fostering international collaboration in osteoporosis research and advocacy.

Professor Orimo graduated from the University of Tokyo School of Medicine and became a professor in the Department of Gerontology at the same university in 1986. His career was distinguished by excellence in research and education, with a focus on geriatrics. As a pioneer in the field of calcium metabolism and osteoporosis, he was instrumental in the development of calcitonin as a treatment for osteoporosis.

Following his retirement from the University of Tokyo, he continued to serve the medical community as Director of the Tokyo Metropolitan Geriatric Medical Center and President of the University of Health Sciences. He remained dedicated to patient care, working four days a week at a facility for the elderly well into his later years.

We extend our deepest condolences to Professor Orimo’s family, friends, and colleagues. His thoughtful leadership, tireless commitment, and profound contributions to the field of osteoporosis and geriatrics will be remembered with great admiration and gratitude.