Bariatric surgeon Dr. Michael Snyder performs a laparoscopic gastric bypass, with five ports inserted in a semi-circle on Carolyn Dawson inflated abdomen, at Rose Medical Center, in Denver August 30, 2010. Snyder has completed some 451 bariatric surgeries in the past year. Picture taken August 30, 2010. REUTERS/Rick Wilking (UNITED STATES - Tags: HEALTH)