Mary K. Muth, PhD, is director of RTI International's Food, Nutrition, and Obesity Policy Research Program. Muth conducts research studies for government agencies and other organizations to analyse the impacts of policies, regulations, and other initiatives affecting food and agriculture. She specializes in the areas of nutrition, food security, food waste, food pricing, food labelling, food reformulation, and food safety. She has extensive experience analysing food availability, purchase, and consumption data and developing economic models of the impacts of food policy. Dr. Muth is also an adjunct associate professor in the Department of Agricultural and Resource Economics at North Carolina State University.