This study found that the smokefree air law in Ireland resulted in lower mortality overall and from heart disease, stroke, and chronic obstructive pulmonary disease (COPD). The abstract stated, "The national Irish smoking ban was associated with immediate reductions in early mortality. Importantly, post-ban risk differences did not change with a longer follow-up period. This study corroborates previous evidence for cardiovascular causes, and is the first to demonstrate reductions in cerebrovascular and respiratory causes."

In January 2012, a study published in Clinical Cardiology concluded that the nation's smokefree air law had resulted in "an early significant decrease in hospital admissions" for acute coronary syndromes (ACS).