Doug Carrell received his Ph.D. degree in reproductive physiology from the University of Utah in 1995, after receiving a M.S. degree in cellular and developmental biology from Brigham Young University. Dr. Carrell has worked in the area of research and treatment of human infertility for 40 years. Dr. Carrell is the clinical laboratory director of the In Vitro Fertilization (IVF) and Andrology laboratories at the University of Utah, and also directs a number of post-doctoral fellows, Ph.D. graduate students, and research personnel. Dr. Carrell is an international leader in the field genetic aspects of male infertility and early embryogenesis. He has authored more than 250 research papers and book chapters, and has edited 9 medical books related to infertility. Dr. Carrell is a frequent invited speaker at national and international medical and research meetings, and served as founding Co Editor-in-Chief of Andrology, the leading journal of male reproductive science and medicine. Dr. Carrell has served recently as president of the Society of Male Reproduction and Urology (SMRU) and the board of the American Society of Reproductive Medicine (ASRM). Dr. Carrell is married and has 5 children. In his free time, Dr. Carrell is an avid marathoner, having completed more than 260 marathons throughout the world and in locations as diverse as the Sahara desert, the Andes, and Antarctica.