The higher risk of death generally is due not to the surgery itself but to the health problems that accompany obesity, and the damage that the condition does to the body before and after surgery, the researchers said.
Dr. Bennet Omalu and colleagues at the University of Pittsburgh said a review of more than 16,000 bariatric operations done in Pennsylvania over a nine-year period found a "substantial excess of deaths owing to suicide and coronary artery disease" compared to normal death rates found in the population at large.