Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Children living near major roads face higher asthma risk

03.05.2006


Young children who live near a major road are significantly more likely to have asthma than children who live only blocks away, according to a study that appears in the May 1 issue of Environmental Health Perspectives.



The study found that children living within 75 meters (about 82 yards) of a major road had a 50 percent greater risk of having had asthma symptoms in the past year than were children who lived more than 300 meters (about 328 yards) away. Higher traffic volumes on the different roads were also related to increased rates of asthma.

"These findings are consistent with an emerging body of evidence that local traffic around homes and schools may be causing an increase in asthma," says lead author Rob McConnell, M.D., professor of preventive medicine at the Keck School of Medicine of the University of Southern California. "This is a potentially important public health problem because many children live near major roads."


More than 5,000 children ages 5 to 7 were involved in the study which was an expansion of the Children’s Health Study, currently underway in 13 southern California communities. The researchers determined how far each participating child lived from a major road - a freeway, large highway or a feeder road to a highway.

"These results suggest that living in residential areas with high traffic-related pollution significantly increases the risk of childhood asthma," says David A. Schwartz, M.D., director of the National Institute of Environmental Health Sciences (NIEHS), the primary agency that funded the study. "Children with no parental history of asthma who had long-term exposure or early-life exposure to these pollutants were among the most susceptible."

Children who lived at the same residence since age 2 had slightly higher rates of asthma than those who had moved to the residence later. "That is what you would expect if the asthma was being caused by traffic," McConnell says. Risk for wheeze also decreased the further away a home was from a major road, dropping to background rates at roughly 150 meters (not quite two blocks).

Study sites included the cities of Alpine, Anaheim, Glendora, Lake Arrowhead, Lake Elsinore, Long Beach, Mira Loma, Riverside, San Bernardino, San Dimas, Santa Barbara, Santa Maria and Upland. McConnell noted that air pollution regulations typically focus on regional air pollutants rather than localized exposures within communities, such as living near a busy road, that may also be a problem. "We’ve taken some tentative steps to address that, for example with a law that a new school can’t be built within 500 feet of a freeway. But we have to also consider whether building parks, play areas, or homes right next to a major road is a wise land use decision in terms of health."

McConnell and his colleagues plan to follow up with a subgroup of the children to measure pollutants in their homes and also to look at characteristics that may make children more susceptible (or that may be protective), such as genetic characteristics.

Kathleen O’Neil | EurekAlert!
Further information:
http://www.usc.edu

More articles from Health and Medicine:

nachricht Cholesterol-lowering drugs may fight infectious disease
22.08.2017 | Duke University

nachricht Once invincible superbug squashed by 'superteam' of antibiotics
22.08.2017 | University at Buffalo

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Fizzy soda water could be key to clean manufacture of flat wonder material: Graphene

Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.

As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...

Im Focus: Exotic quantum states made from light: Physicists create optical “wells” for a super-photon

Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.

Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...

Im Focus: Circular RNA linked to brain function

For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.

While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...

Im Focus: RAVAN CubeSat measures Earth's outgoing energy

An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.

The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...

Im Focus: Scientists shine new light on the “other high temperature superconductor”

A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.

Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Call for Papers – ICNFT 2018, 5th International Conference on New Forming Technology

16.08.2017 | Event News

Sustainability is the business model of tomorrow

04.08.2017 | Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

 
Latest News

What the world's tiniest 'monster truck' reveals

23.08.2017 | Life Sciences

Treating arthritis with algae

23.08.2017 | Life Sciences

Witnessing turbulent motion in the atmosphere of a distant star

23.08.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>