Dr. Dean D. Krahn is Clinical Associate Professor of Psychiatry, University of Wisconsin Medical School. He received both his B.A. in psychology (Phi Beta Kappa)and his M.D. (A.O.A.) from Wisconsin, and then completed his post-doctoral training at the Medical College of Wisconsin and the University of Minnesota. Board-certified in psychiatry, Dean is also Chief, Mental Health Service, Wm. S. Middleton Memorial Veterans Hospital. The author of numerous peer-reviewed studies and textbook chapters, Dr. Krahn's research investigates opiodergic mechanisms in eating behaviors and disorders as well as the relationship between eating and substance use disorders.