A new study shows dramatic improvements in Iowans’ cardiovascular health since the state went smoke free in 2008. The study examined data submitted to the Iowa Department of Public Health summarizing the number of monthly hospitalizations between July 2005 and June 2009 for cardiovascular diseases caused or made worse by smoking and exposure to tobacco smoke. Dr. Christopher Squier at the University of Iowa says they’ve found a 24 percent reduction in hospital admissions due to coronary heart disease in the year after the Smokefree Air Act was passed compared with the previous three years.