On a spring afternoon, a child sprints across a school field, cheeks flushed, arms pumping—then suddenly slows, shoulders hunched, breathing sharp and fast. The run ends not with laughter, but with wheezing. Many parents recognize this scene. Many adults do too—especially when pollen counts climb, temperatures swing, and air quality slips.
Asthma is a fact of life for millions. More than 28 million Americans have asthma, including nearly one in 15 children, according to national estimates.
