Ian Caterson is currently Foundation Director of the Boden Institute of Obesity Nutrition Exercise and Eating Disorders and Boden Professor of Human Nutrition at the University of Sydney. He has held the latter position since 1997. Prior to that he was Senior Staff Specialist and Director of Clinical Endocrinology at Royal Prince Alfred Hospital. He has been president of both the Australian Diabetes Society and the Australasian Society for the Study of Obesity & is president of the World Obesity Federation. He is a recognised expert on obesity, its causes, prevention and management. He is on the Clinical Care group of World Obesity, chairs the Expert Obesity Committee for the Australian National Preventive Health Agency, and is on the Prevention and Community Health Committee of the NHMRC of Australia.