When it comes to linking cigarette smoke to heart attacks, one might assume that such a link would apply only as long as one is smoking or being exposed to secondhand smoke. That's not necessarily true, however, at least according to a follow-up study of people living in and around Pueblo, Colorado. In the 2 January 2009 issue of Morbidity and Mortality Weekly Report (MMWR), researchers reported that hospitalizations in Pueblo for acute myocardial infarction (AMI) showed a steady, continuous decline three years after the city introduced a smoking ban in all public buildings.