Did Your City Make the List?
Asthma is a chronic disease of the airways that makes breathing difficult for more than 25 million Americans. Air pollution, secondhand smoke, and pollen are common triggers of an asthma attack. While there are no asthma-free cities, some are more challenging than others for people living with asthma. The Asthma and Allergy Foundation of America (AAFA) has released its "2012 Asthma Capitals." Here are the top 10.