From above:

Smoking kills! Smoking causes more preventable deaths than anything else does in America, and the rest of the world is catching up. To illustrate the relative risk of dying from smoking as compared to the risk of dying from other factors, for every thousand 20 year olds that smoke today and don't quit, 6 will die from being murdered, 12 will die from accidents, 500 will die from smoking! This is scary stuff.