Jeroen Douwes is Professor of Public Health and Director of Massey University’s Centre for Public Health Research (CPHR) in Wellington. Prior to moving to New Zealand in 1998 he obtained his MSc and PhD in environmental epidemiology from Wageningen University, The Netherlands. He leads a comprehensive programme of public health research with a focus on respiratory disease and environmental and occupational health. Jeroen is Associate Editor of the International Journal of Epidemiology and Community Health and has published 155+ peer reviewed publications. He also serves on the board of the New Zealand Health Research Council.