Chances are, you know someone with asthma — after all, about one in 12 people in the U.S. has the condition. Having asthma means to have airways that are inflamed, which makes them particularly sensitive to substances ranging from pollution to dust. Exposure to an asthma trigger can cause the narrowing and swelling of the airways, as well as increased production of mucus, making it very difficult to breathe. When these asthma symptoms are particularly intense, that’s called an asthma attack — and knowing what exactly triggers these attacks is vital for people with the respiratory condition.
View full post on Health News Headlines – Yahoo News