Why does exercise cause asthma symptoms?
No one knows exactly why exercise triggers asthma symptoms. Some researchers believe it has to do with the changes in the airways that occur with heavy breathing. Normally, the nose humidifies and warms inhaled air before it reaches the airways. As exercise becomes more intense, you breathe through your mouth instead of through your nose. Large volumes of dry; cool air draw moisture from the airways. As the airways lose moisture, chemical changes in the cells may trigger the allergic reactions associated with asthma. How is ETA treated? A variety of asthma medications help prevent symptoms of ETA. These must be individually prescribed by your doctor. People with allergies may also be able to avoid conditions that exacerbate their asthma. For example, people allergic to pollen may have less ETA when they exercise indoors during pollen season. Many people with asthma find that respiratory infections (colds, flu) trigger asthma symptoms. You may need to avoid intense or endurance exe
