Bronchial asthma or reactive airway disease (RAD) is a form of asthma that's caused by allergies. My mother has it and it is directly related to her abundance of allergies. That's no coincidence either considering that 70 percent of asthma sufferers have allergies as well. That means that by controlling your allergies, many sufferers can also control their various symptoms of asthma including the scary ones like airway constriction. I am in no way advocating giving up traditional means of treating the disease for everyone, but for some trying a more natural remedy for controlling the symptoms is doable. The rate of 20 million asthma sufferers is currently increasing and many think that is related the to the air quality caused by an increase in pollution and the increasing concentrations of carbon dioxide in the air as a result of global warming according to a Wall Street Journal article.