Featured Research

from universities, journals, and other organizations

Heavy Traffic Makes Breathing A Burden In Children

Date:
December 17, 2007
Source:
American Thoracic Society
Summary:
Exposure to traffic pollution may increase respiratory problems and reduce lung volumes in children with asthma, according to researchers who studied the effects of road and traffic density on children's lung function and respiratory symptoms in the border town of Ciudad Juarez in Mexico.

Exposure to traffic pollution may increase respiratory problems and reduce lung volumes in children with asthma, according to researchers who studied the effects of road and traffic density on children's lung function and respiratory symptoms in the border town of Ciudad Juarez in Mexico.

Related Articles


"Our results show that close proximity to vehicular traffic-related emissions, either at home or at school, can lead to chronic effects in the respiratory health of children with asthma," said Fernando Holguin, M.D., M.P.H., assistant professor of pulmonary medicine at Emory University School of Medicine, and lead author of the study, which appeared in the second issue for December of the American Journal of Respiratory and Critical Care Medicine.

Traffic-related pollutants are known to be associated with asthma severity, but to what extent they affect airway inflammation and lung volume in both asthmatic and nonasthmatic children was unknown. "Major cities along the northern and southern US borders often have high levels of vehicular traffic flows, especially at the border crossing points. Vehicular traffic emissions from the high density of border crossing traffic may be negatively affecting the health of populations who live in nearby areas," said Dr. Holguin.

To investigate how specific traffic-related pollutants affected children's lung function and respiratory symptoms, the researchers recruited 200 age- and sex-matched asthmatic and non-asthmatic schoolchildren from ages six to 12. Over the course of a year, they measured road and traffic density and traffic-associated pollutants near the children's homes and schools, and evaluated each child's lung function and respiratory symptoms consecutively for four months.

Asthmatic children, but not children without asthma, were affected by living in homes in areas with high road density. They had higher levels of exhaled NO, as well as reductions in both lung volume and airflow. Living within 50 meters of high density road areas increased the chances of respiratory symptoms in asthmatic children by more than 50 percent.

"These results may have implications for asthmatic children residing in these conditions--especially among those who may not be adequately controlled with medications--for they may be more susceptible to vehicular emissions," said Dr. Holguin.

While increased traffic and road density near schools also indicated respiratory effects in both asthmatic and nonasthmatic children, the data did not attain statistical significance in this study. Nonetheless, Dr. Holguin noted, "this finding could have significant public health policy implications because a significant proportion of schools in many countries are located in close proximity to major roads."

This is the first study of its kind to evaluate traffic-related emissions exposure in a large group of children with and without asthma over an entire year. The findings support and add to previous studies which have looked at the effects of traffic emissions on children, but it may have been underpowered to detect significant associations between respiratory outcomes and specific pollutants.

"These results are significant because they quantitatively demonstrate that closer exposure to roads lead to chronic airway inflammation and reductions in lung function," said Dr. Holguin. "This study points the way for future research to determine what preventive measures may be taken to reduce exposure and or the health effects of vehicular emissions in susceptible children."


Story Source:

The above story is based on materials provided by American Thoracic Society. Note: Materials may be edited for content and length.


Cite This Page:

American Thoracic Society. "Heavy Traffic Makes Breathing A Burden In Children." ScienceDaily. ScienceDaily, 17 December 2007. <www.sciencedaily.com/releases/2007/12/071214094057.htm>.
American Thoracic Society. (2007, December 17). Heavy Traffic Makes Breathing A Burden In Children. ScienceDaily. Retrieved December 19, 2014 from www.sciencedaily.com/releases/2007/12/071214094057.htm
American Thoracic Society. "Heavy Traffic Makes Breathing A Burden In Children." ScienceDaily. www.sciencedaily.com/releases/2007/12/071214094057.htm (accessed December 19, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Friday, December 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Kids Die While Under Protective Services

Kids Die While Under Protective Services

AP (Dec. 18, 2014) As part of a six-month investigation of child maltreatment deaths, the AP found that hundreds of deaths from horrific abuse and neglect could have been prevented. AP's Haven Daley reports. (Dec. 18) Video provided by AP
Powered by NewsLook.com
Dads-To-Be Also Experience Hormone Changes During Pregnancy

Dads-To-Be Also Experience Hormone Changes During Pregnancy

Newsy (Dec. 18, 2014) A study from University of Michigan researchers found that expectant fathers see a decrease in testosterone as the baby's birth draws near. Video provided by Newsy
Powered by NewsLook.com
Prenatal Exposure To Pollution Might Increase Autism Risk

Prenatal Exposure To Pollution Might Increase Autism Risk

Newsy (Dec. 18, 2014) Harvard researchers found children whose mothers were exposed to high pollution levels in the third trimester were twice as likely to develop autism. Video provided by Newsy
Powered by NewsLook.com
UN: Up to One Million Facing Hunger in Ebola-Hit Countries

UN: Up to One Million Facing Hunger in Ebola-Hit Countries

AFP (Dec. 17, 2014) Border closures, quarantines and crop losses in West African nations battling the Ebola virus could lead to as many as one million people going hungry, UN food agencies said on Wednesday. Duration: 00:52 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins