John D Potter is a Professor at CPHR, Massey University, Wellington; Adjunct Professor at University of Canterbury, Christchurch; and Senior Advisor, Fred Hutchinson Cancer Research Center (FHCRC) and Professor Emeritus of Epidemiology at the University of Washington, both in Seattle, USA. John was up until recently, the Chief Science Advisor, New Zealand (NZ) Ministry of Health. Potter has had an outstanding international research career focussing on nutrition, other environmental and host f...