A study published in April 2010 in the Canadian Medical Association Journal concluded that hospital admissions for heart attacks, cardiovascular disease, and respiratory illnesses decreased following the implementation in June 2001 of a smokefree restaurant law in Toronto. (Naiman, A.; Glazier, R.H.; Moineddin, R., "Association of anti-smoking legislation with rates of hospital admission for cardiovascular and respiratory conditions," Canadian Medical Association. Journal [Epub ahead of print], April 12, 2010.)

A study published in the January-February 2008 issue of the Canadian Journal of Public Health attempted to assess the effect of smokefree legislation in Saskatoon, Canada, on the incidence of acute myocardial infarction and its effect on smoking prevalence. The study also measured public support for the smokefree law.

The authors concluded that, "The public smoking ban in Saskatoon, Canada, is associated with reduced incidence rates of acute MI, lower smoking prevalence and high levels of public support."