Professor Nguyen is highly recognised nationally and internationally as a leader in the field of osteoporosis research. Among much pioneering and influential work (>25,000 citations, H index 76), his development of assessment tools for identifying people at high-risk of fracture has helped millions of people worldwide. As a principal investigator of the Dubbo Osteoporosis Epidemiology Study and the newly created Vietnam Osteoporosis Study, he has contributed scientific evidence for health care policy and clinical guidelines concerning the prevention and treatment of osteoporosis internationally. His outstanding contributions and intellectual leadership are evidenced by prestigious research fellowships, awards, honorary professorships, and fellowship of the American Society for Bone and Mineral Research.