Your Source for NPR News & Music
Play Live Radio
Next Up:
0:00
0:00
0:00 0:00
Available On Air Stations
We are operating on low power due to some issues at our transmitter site. Our engineering staff is working on the issue.

Dr. Ian Smith on Health: Asthma

NPR's Tavis Smiley talks to health commentator Dr. Ian Smith about whether genetic and environmental factors play key roles in why people suffer from asthma.

Copyright 2004 NPR

Related Stories