The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) National Heart, Lung, and Blood Institute (NHLBI) National Institute on Aging (NIA) National Cancer Institute (NCI) Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) Office of Behavioral and Social Sciences Research (OBSSR) have issued a funding opportunity announcement (FOA) for obesity research. The R01 (PA-13-110) requests proposals to evaluate large scale policy or programs that are expected to influence obesity related behaviors and weight outcomes in an effort to prevent or reduce obesity. Standard dates apply.