The risks associated with exposure to second-hand smoke are well documented. A growing number of countries are now implementing restrictions on smoking in public places like restaurants and transport facilities. In some countries, such as the United States, most workplaces are also covered by public smoking restrictions. The most obvious benefit of these restrictions is to non-smokers and employees, who are spared the exposure to the health risks and nuisance of second-hand tobacco smoke. Further, these smoking restrictions help the smokers themselves to reduce consumption of cigarettes and induce cessation (after all, it has been estimated that around 70% of all smokers would like to stop). Finally, an important benefit of restrictions on public smoking is to decrease the social acceptability of tobacco use, which in the medium and long term leads to decrease prevalence and incidence of tobacco use and increased public support for tobacco control.