Lorraine O. Walker, RN, EdD, MPH, has had a lifelong focus in maternal and infant health and well-being. She received a BSN from the University of Dayton, as well as a Master’s degree in nursing education with a specialization in maternity nursing and a doctoral degree in philosophy of education from Indiana University-Bloomington. Her dissertation focused on nursing as an academic and practice discipline. She also completed post-doctoral study in educational psychology at The University of Texas at Austin and received the MPH degree in maternal-child health from the University of Alabama at Birmingham. Dr. Walker is a leading expert in nursing on women’s weight during pregnancy and postpartum period. She also has extensive expertise in the areas of behavioral and psychosocial health in childbearing women and new mothers, the motherhood transition, and its implications for maternal and infant health. She is co-author of a text on theory development strategies that is in it 6th edition and used worldwide in nursing graduate programs. She teaches courses in the areas of global health, quantitative data analysis, and philosophic and theoretical foundations of nursing science.