In a large, randomized, placebo-controlled study of 22,071 healthy male physicians, taking a low-dose of aspirin every other day lowered the risk of receiving an initial asthma diagnosis by 22 percent.

Annual Gulf Coast phenomenon may trigger respiratory symptoms

Government leaders from Asia have pledged to boost air quality control programs in some of the most polluted cities of the world. As Chad Bouchard reports from the Indonesian city of Yogyakarta, widespread urban smog threatens economic growth and is blamed for more than a half-million premature deaths each year.

A new study by specialists at the Johns Hopkins Children's Center and elsewhere suggests that only one in five inner-city children with chronic asthma gets enough medicine to control dangerous flare-ups of the disease.

USC researchers find nonasthmatics share similar symptoms as those with asthma