Birgitta Adolfsson, Ph.D., is a licensed psychologist and has helped patients adapt to lifestyle change and treat their obesity for over 30 years. Marilynn S. Arnold, M.S., R.D., L.D., C.D.E., is a second-career dietitian whose 22 years of experience in treating diabetes has been divided between the clinic and the classroom. She has contributed to several publications, taken part in translation research, and participated in the development of the empowerment approach to diabetes patient education.