Professor Brian Oldfield has been an Australian NHMRC Fellow from 1985 to 2019, most of that time as a Principal Research Fellow. He received his PhD from Monash University, trained postdoctorally at McGill University, Montreal and Columbia University, New York before spending formative years at the Howard Florey Institute, Melbourne where he developed his overriding focus on obesity research. He was recruited to Monash University in 2005 and since then has pursued interests in different aspects of appetite, energy expenditure and body weight control. In addition to his basic science interests he has sought to influence obesity policy and care for those living with obesity through involvement in national and international planning committees and Societies. Notably, he has been President of the Australian and New Zealand Obesity Society (ANZOS), is currently President of the Asia Oceania Association for the Study of Obesity (AOASO) and one of the Vice Presidents of the World Obesity Federation (WOF).