Approximately 7.6% of the US Population has some form of asthma. Regionally, nearly 70,000 people in the 20-county WTOC viewing area suffer from this chronic condition. For many asthmatics, physical activity can trigger an attack. This event is known as exercise-induced asthma. For most people, however, asthma is an allergic disease. As with other allergies, those with a family history of the condition are more likely to develop it.