Katrina L. Piercy, PhD, RD, ACSM-CEP, FACSM, is the Director of the Division of Prevention Science in the Office of Disease Prevention and Health Promotion (ODPHP) in the United States Department of Health and Human Services (HHS) and serves as a dietitian officer in the United States Public Health Service Commissioned Corps. Piercy bring strategic leadership, vision, and deep subject matter expertise to lead, execute, and disseminate multi-year national public health policy initiatives on behalf of HHS, including the Dietary Guidelines for Americans, Physical Activity Guidelines for Americans, and the National Youth Sports Strategy.