Skip to content

Asthma Health Center

Font Size

Traffic Pollution Tied to Asthma in Kids

Living Near High-Traffic Areas Linked to Childhood Asthma, Bronchitis
WebMD Health News

Sept. 1, 2004 - Living near a busy road could increase a child's chances of getting bronchitis or asthma, according to a study in the American Journal of Respiratory and Critical Care Medicine.

The study's researchers looked at asthma, bronchitis, and traffic-related air pollution in California's Alameda County, which has relatively clean air despite being near San Francisco.

Led by Bart Ostro, PhD, of California's Office of Environmental Health Hazard Assessment, the team surveyed parents of more than 1,000 kids in grades 3-5. The families lived in 10 neighborhoods near busy traffic areas.

The parents were asked if their child had been diagnosed with asthma or bronchitis. Fourteen percent said their child had been diagnosed with asthma in the past 12 months. Twelve percent of the kids had bronchitis in the previous year, and 43% of the bronchitis patients also had asthma.

The researchers also measured outdoor pollution levels, focusing on traffic pollutants near the children's schools.

Since most of the kids in the study live near their schools and don't ride a bus, the pollution levels outside their homes should be about the same.

Pollution readings were taken in the spring (March-June) and fall (September-November) of 2001.

During that time, some kids moved to different addresses. But for those living in one place for at least a year, there were modest but significant increases in bronchitis symptoms and asthma in neighborhoods with higher concentrations of traffic pollutants, write the researchers.

Wind patterns were important. Living downwind of a major road increased exposure to traffic pollutants.

The findings are in line with other American and European studies, prompting the researchers to call for wider monitoring of traffic-related air pollution.

When Is Your Asthma Worse?

When Is Your Asthma Worse?

Take the WebMD Asthma assessment to get Personalized Action Plan

Start Now

Today on WebMD

Lung and bronchial tube graphic
5 common triggers.
group jogging in park
Should you avoid fitness activities?
asthma inhaler
Learn about your options.
man feeling faint
What’s the difference?
Madison Wisconsin Capitol
woman wearing cpap mask
red wine pouring into glass
Woman holding inhaler
Man outdoors coughing
Lung and bronchial tube graphic
10 Worst Asthma Cities

WebMD Special Sections