Associate Professor Christian Girgis is an endocrinologist and a clinician researcher with an interest in osteoporosis, metabolic bone disorders and vitamin D. After completing a PhD in molecular biology at the Garvan institute of medical research, he undertook an NHMRC Peter Doherty Postdoctoral Fellowship at the Westmead Institute for Medical Research and a visiting scholarship at the Salk Institute of Biological Studies USA, examining roles of the vitamin D receptor in muscle biology. Christian leads the Osteoporosis and Metabolic Bone Disorders service at Westmead Hospital Sydney. He leads an active research program in musculoskeletal disorders and osteoporosis therapies and is Program Director of the Masters of Medicine (MMED) Internal Medicine course at the University of Sydney.