Prof. Dr. Adam Drewnowski is Professor of Epidemiology at the University of Washington and the Director of the UW Center for Public Health Nutrition.  Dr. Drewnowski obtained his MA degree in biochemistry from Balliol College, Oxford University and a PhD degree in mathematical psychology from The Rockefeller University in New York.  Dr. Drewnowski is the author of the Nutrient Rich Food Index (NRF) a well-known model to assess nutrient density of foods and has published on achieving affordable nutrient density among populations of differing race/ethnicity, education and incomes. Dr. Drewnowski has published more than 400 research articles, and advises governments, foundations, and the private sector on nutrient density issues. His Seattle Obesity Study (S.O.S.) combined health survey research with novel methods of spatial analysis, receiving long-term funding from the NIH. He is a Fellow of the American Society for Nutrition.