Some of the known short term health effects of air pollution include irritation to the eyes, nose, and throat, and an increased susceptibility to upper respiratory infections.  Other symptoms can include headaches, nausea, and allergic reactions.  Studies that have been conducted thus far on the long term health effects of polluted air, display some disturbing trends.   Some of the documented health effects include respiratory disease, lung cancer, and heart disease.  Nerve, brain, liver and kidney damage have all been linked to continual exposure to air pollution.  As mentioned earlier children consume twice as much air as adults and are therefore more susceptible to the effects of poor air.  Since 1980 there has been a 75 percent increase in asthma sufferers.  The role of air pollution in asthma attacks is well documented, however the role air pollution plays in initiating asthma is still under investigation.  The Children's Health Study at the University of Southern California observed children who participated in an array of sports and lived in areas with levels of high ozone pollution.