A smoking ban is a policy that restricts or outlaws smoking. Smoking bans are generally a good thing because people can get cancer from cigarettes that other people have smoked. People should therefore be protected from other people's carcenogenes. Workers in establishments like bars and restaurants should be protected from other people's tobacco smoke. Therefore bans on smoking in such establishments are reasonable.
In Pueblo, Colorado hospital admissions for heart attacks fell 27% after a ban took effect though there was no change in heart attack admissions in nearby towns without the ban. in Helena, Montana there was an even more dramatic 40% fall in heart attacks after a smoking ban. A public smoking ban in New York State reduced hospital admissions for heart attacks by nearly 4,000. Research in Turin, Italy also showed reduced heart attacks there.