Featured Research

from universities, journals, and other organizations

City cyclists are at increased risk from lung injury from inhaled soot, study finds

Date:
September 25, 2011
Source:
European Lung Foundation
Summary:
People who cycle through London and other major cities have higher levels of black carbon in their airway cells, experts from the UK have shown.

People who cycle through London and other major cities have higher levels of black carbon in their airway cells, experts from the UK have shown.

The research, presented at the European Respiratory Society's Annual Congress in Amsterdam, suggests that cyclists inhale more black carbon than pedestrians, which may cause damage to the lungs.

The combustion of fossil fuels results in the generation of large numbers of inhalable particles of soot (black carbon). There is increasing evidence that inhalation of black carbon particles is associated with a wide range of health effects -- including heart attacks and reduced lung function.

The researchers, led by Professor Jonathan Grigg from Barts and the London School of Medicine, aimed to identify whether the way healthy adults commute to work affects their exposure to black carbon. Specifically, they tested the hypothesis that cyclists have higher personal exposure to black carbon.

To test this theory the study compared the lung dose of black carbon in cyclists and pedestrians. To measure lung dose the researchers sampled a lower airway cell called the airway macrophage -- a specialised cell that sits on the airway surface and ingests foreign material.

The researchers collected sputum samples from five adults who regularly cycled to work in London and five pedestrians and analysed the amount of black carbon found in their airway macrophages. All participants in the study were non-smoking healthy urban commuters aged between 18 and 40 yrs.

The results showed that in this small sample, cyclists have 2.3-times more black carbon in their lungs when compared with pedestrians. The probability that this difference occurred by chance is less than 1 in 100.

Dr Chinedu Nwokoro, one of the researchers of the study and an active cyclist, said: "The results of this study have shown that cycling in a large European city increases exposure to black carbon. This could be due to a number of factors including the fact that cyclists breathe more deeply and at a quicker rate than pedestrians while in closer proximity to exhaust fumes, which could increase the number of airborne particles penetrating the lungs. Our data strongly suggest that personal exposure to black carbon should be considered when planning cycling routes. Whether cycling by healthy individuals is in itself associated with adverse health effects is currently being assessed in a larger ongoing study."


Story Source:

The above story is based on materials provided by European Lung Foundation. Note: Materials may be edited for content and length.


Cite This Page:

European Lung Foundation. "City cyclists are at increased risk from lung injury from inhaled soot, study finds." ScienceDaily. ScienceDaily, 25 September 2011. <www.sciencedaily.com/releases/2011/09/110925125145.htm>.
European Lung Foundation. (2011, September 25). City cyclists are at increased risk from lung injury from inhaled soot, study finds. ScienceDaily. Retrieved September 2, 2014 from www.sciencedaily.com/releases/2011/09/110925125145.htm
European Lung Foundation. "City cyclists are at increased risk from lung injury from inhaled soot, study finds." ScienceDaily. www.sciencedaily.com/releases/2011/09/110925125145.htm (accessed September 2, 2014).

Share This




More Earth & Climate News

Tuesday, September 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Thousands of Fish Dead in Mexico Lake

Raw: Thousands of Fish Dead in Mexico Lake

AP (Sep. 2, 2014) — Over 53 tons of rotting fish have been removed from Lake Cajititlan in western Jalisco state. Authorities say that the thousands of fish did not die of natural causes. (Sep. 2) Video provided by AP
Powered by NewsLook.com
Raw: Iceland Volcano Spewing Smoke

Raw: Iceland Volcano Spewing Smoke

AP (Sep. 2, 2014) — The alert warning for the area surrounding Iceland's Bardarbunga volcano was kept at orange on Tuesday, indicating increased unrest with greater potential for an eruption. Smoke is spewing from the volcano, and lava is spouting nearby. (Sept. 2) Video provided by AP
Powered by NewsLook.com
U.N. Says Ebola Travel Restrictions Will Cause Food Shortage

U.N. Says Ebola Travel Restrictions Will Cause Food Shortage

Newsy (Sep. 2, 2014) — The U.N. says the problem is two-fold — quarantine zones and travel restrictions are limiting the movement of both people and food. Video provided by Newsy
Powered by NewsLook.com
Halliburton Reaches $1B Gulf Spill Settlement

Halliburton Reaches $1B Gulf Spill Settlement

AP (Sep. 2, 2014) — Halliburton's agreement to pay more than $1 billion to settle numerous claims involving the 2010 BP oil spill could be a way to diminish years of costly litigation. A federal judge still has to approve the settlement. (Sept. 2) Video provided by AP
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:
from the past week

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