Indoor Air Pollution Increases Asthma Symptoms Among Children

Here at Air Duct Cleaning Portland, we are constantly trying to increase awareness about the harmful effects of indoor air pollution.  In our ongoing effort to educate the public about this pressing issue, we wanted to share this case study with you. A recent study by a group of researchers at Johns Hopkins University has found a direct association between increased levels of indoor particulate matter in the air and the severity of asthma symptoms among children. The study, which followed a group of asthmatic children in the Baltimore, Maryland area is one of the first to examine the effects of indoor particulate matter pollution. The results were published in the The Journal of Environmental Health Perspectives.

Indoor Air Pollution Study Findings:

Indoor Air Pollution

“We found that substantial increases in asthma symptoms were associated both with higher indoor concentrations of fine particles and with higher indoor concentrations of coarse particles,” said Meredith C. McCormack, MD, MHS, lead author of the study and an instructor with the Johns Hopkins School of Medicine.


“Children spend nearly 80 percent of their time indoors, which makes understanding the effects of indoor air very important,” said co-author, Gregory B. Diette, MD, an associate professor in the School of Medicine and co-director of the Center for Childhood Asthma in the Urban Environment.

“Improving indoor air quality and lowering indoor particulate matter concentrations may provide additional means of improving asthma health, especially for children living in inner cities,” added co-author, Patrick Breysse, PhD, a professor in the Johns Hopkins Bloomberg School of Public Health and co-director of the Center for Childhood Asthma in the Urban Environment.


At Air Duct Cleaning Portland by J&M Services, we are Portland’s Indoor Air Quality Experts. We specialize in air duct cleaning all around the Portland metro area. We serve both residential and commercial clients.

For any indoor air quality concern please contact us.

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