Smokers may have a higher chance of harm from surgery due to complications arising from their habit, but this is not a phenomenon specific to them. Cardiovascular disease, or heart disease to most people, is the number one killer of men and women in the United States1. It is caused by the build-up of fatty deposits that clog the vessels - those at risk are often smokers, but can just as often be those who are overweight, have diabetes or simply high blood pressure. As such, it is not justified to single out smokers when those with unhealthy diets can just as easily cause complications in their surgeries.  1. Daily News, 13 Jul 11, Cardiovascular disease: Defend yourself by lowering the risks.Accessed 14 Jul 11.