David Raubenheimer is the Leonard P. Ullman Professor of Nutritional Ecology in the School of Life and Environmental Sciences, and Nutrition Theme Leader in the Charles Perkins Centre at the University of Sydney. He previously spent 17 years at Oxford, initially as a doctoral student then as a Research Fellow and Departmental Lecturer in Zoology and Fellow of Magdalen College. He heads the Sydney Food and Nutrition Network and is a member of the Australian National Committee for Nutrition.