Rafael Pérez-Escamilla, Ph.D., is Professor of Epidemiology & Public Health, Director of the Office of Public Health Practice, and Director of the Global Health Concentration at the Yale School of Public Health. His global public health nutrition and food security research program has led to improvements in breastfeeding programs, iron deficiency anemia among infants, household food security measurement and outcomes, and community nutrition education programs. His health disparities research involves assessing the impact of community health workers at improving behavioral and metabolic outcomes among Latinos with type 2 diabetes. He has published over 170 research articles, 2 books, and numerous journal supplements, book chapters, and technical reports. He is a member of the National Research Council Food and Nutrition Board. He has been a senior advisor to maternal-child community nutrition programs as well as household food security measurement projects funded by WHO, PAHO, UNICEF, FAO, UNESCO, UNDP, CDC, USDA, USAID, The World Bank, the Gates Foundation, and the Governments of Mexico, Brazil, and Colombia.