What Causes Asthma?
The exact cause of asthma is unknown, and asthma cannot be cured. However, asthma can be controlled. Triggers for asthma can include mold, tobacco smoke, outdoor air pollution, and infections linked to influenza, colds, and other viruses. Avoiding these triggers, along with using inhaled corticosteroids and other medicines, are the keys to preventing an asthma attack. Source: CDC
Asthma State Profiles
The CDC's National Center for Environmental Health (NCEH) publishes Asthma State Profiles to provide information about the number of people who are affected by asthma in the states that are part of the CDC National Asthma Control Program.