The Roodeport Record – Staff Writer
Asthma is a chronic disease that affects the lungs. It involves an inflammation and narrowing of the airways, also known as the bronchial tubes, through which air flows in and out of the lungs, causing them to become swollen and very sensitive. The muscles in the airways may contract and their cells may produce more mucus than usual, contributing to a further constriction. While the exact causes of asthma are not well understood, scientists believe that there are a number of factors that contribute to it.
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