As the nation gears up for another July 4th holiday, those with respiratory diseases such as asthma, bronchitis and COPD need to be aware of potential disease flare ups due to soot and ozone propelled into the air by barbecues, fireworks, and the increased number of cars on roads. Exposure to high levels of ozone can cause coughing, wheezing, shortness of breath and even heart attacks in both healthy people and those with pulmonary disease. Therefore, be aware of your local pollution level and limit strenuous exercise (which can cause you to inhale more pollutants) during times of increased air pollution. Have a safe and happy fourth!
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Tags: 4th of July, air pollution, asthma, barbecue, bronchitis, COPD, cough, exercise, fireworks, heart attack, July 4th, ozone, wheezing


Dr. Steven Chang, the author of DailyDose, is a staff physician with Kosmix RightHealth. Dr. Chang practices Family Medicine at the University of California Davis Medical Center, where his medical interests include both pediatric and geriatric care, public health, gay and lesbian health, and sleep medicine. Dr. Chang trained at the Stanford University affiliated O'Connor Hospital, and was a research fellow at the National Institute of Health. He holds an M.D. from McGill University and a BA in Public Health from Johns Hopkins University.