National Smoking Bans Improve Health.
A review of 77 studies indicates that in countries with national bans on smoking in public places, there has been a corresponding decrease in hospital admissions for nonsmokers related to cardiovascular disease. Review author Dr. Cecily Kelleher adds, “The current evidence provides more robust support for the previous conclusions that the introduction of national legislative smoking bans does lead to improved health outcomes through a reduction in secondhand smoke exposure for countries and their populations.”
Cochrane Library, February 2016