DrPH, MPH, Loma Linda University

Research Interests

The relationship between plant-based diets and a reduced risk of chronic diseases; epidemiology of chronic diseases; behavioral strategies for lifestyle modification; body composition; nutritional assessment methodologies


Dr. Radak has worked in leadership and administration for a variety of public health-related nonprofit organizations, ranging from cancer prevention and research to health promotion and nutrition. He has taught graduate-level courses for a number of years in both campus-based and distance learning environments. Prior to joining Walden University, Dr. Radak was an assistant professor at Appalachian State University. He has published articles in a number of national and international peer-reviewed journals; written textbook chapters; and contributed to and participated in television, radio, and newsprint media as an expert on various public health and nutrition topics. He has been credentialed as a registered dietitian since 2000. Dr. Radak has been a faculty member at Walden in the School of Health Sciences since 2010, teaching public health courses in both the PhD and MPH programs before becoming the academic coordinator for the PhD in Public Health and Doctor of Public Health (DrPH) programs.