Richard Wilkinson is Professor of Social Epidemiology, Division of Epidemiology and Public Health, University of Nottingham Medical School, and Visiting Professor at the International Centre for Health and Society, Department of Epidemiology, University College London. He has been researching the social determinants of health and health inequalities for over 25 years and is the author of the bestselling Unhealthy Societies: The Afflictions of Inequality (Routledge, 1996).