Featured Research

from universities, journals, and other organizations

Air pollution linked to chronic heart disease

Date:
June 5, 2012
Source:
American Friends of Tel Aviv University
Summary:
Cardiac patients living in high pollution areas were found to be over 40 percent more likely to have a second heart attack when compared to patients living in low pollution areas, according to a new study.

Air pollution, a serious danger to the environment, is also a major health risk, associated with respiratory infections, lung cancer and heart disease. Now a Tel Aviv University researcher has concluded that not only does air pollution impact cardiac events such as heart attack and stroke, but it also causes repeated episodes over the long term.
Credit: © trekandshoot / Fotolia

Air pollution, a serious danger to the environment, is also a major health risk, associated with respiratory infections, lung cancer and heart disease. Now a Tel Aviv University researcher has concluded that not only does air pollution impact cardiac events such as heart attack and stroke, but it also causes repeated episodes over the long term.

Related Articles


Cardiac patients living in high pollution areas were found to be over 40 percent more likely to have a second heart attack when compared to patients living in low pollution areas, according to Dr. Yariv Gerber of TAU's School of Public Health at the Sackler Faculty of Medicine. "We know that like smoking cigarettes, pollution itself provokes the inflammatory system. If you are talking about long-term exposure and an inflammatory system that is irritated chronically, pollution may well be involved in the progression of atrial sclerosis that manifests in cardiac events," explains Dr. Gerber.

Done in collaboration with Prof. Yaacov Drory and funded by the Environmental and Health Fund in Jerusalem, the research was presented at the San Diego Epidemiological Meeting of the American Heart Association in March and the Annual Meeting of the Israeli Heart Society in April.

Risking recurrence

Air pollution has previously been acknowledged as a factor in heart attack risk, as well as other health risks. The goal of this study, says Dr. Gerber, was to quantify that association and determine the long-term effects of air pollution on myocardial infarction (MI) patients. Their study followed 1,120 first-time MI patients who had been admitted to one of eight hospitals in central Israel between 1992 and 1993, all of whom were under the age of 65 at the time of admittance. The patients were followed up until 2011, a period of 19 years.

Air quality was measured at 21 monitoring stations inareas where the patients lived, and analyzed by a group of researchers at the Technion in Haifa. After adjusting for other factors such as socio-economic status and disease severity, the researchers identified an association between pollution and negative clinical outcomes, including mortality and recurrent vascular events such as heart attack, stroke and heart failure.

Compared to patients who lived in areas with the lowest recorded levels of pollution, those in the most polluted environment were 43 percent more likely to have a second heart attack or suffer congestive heart failure and 46 percent more likely to suffer a stroke. The study also found that patients exposed to air pollution were 35 percent more likely to die in the almost 20 year period following their first heart attack than those who were exposed to lower levels of pollution.

According to Dr. Gerber, the true impact of air pollution might be even stronger than this study shows. "Our method of assessing exposure does have limitations. Because we are using data from monitoring stations, it's a crude estimate of exposure, which most likely leads to an underestimation of the association," he warns. He estimates that air pollution could have double the negative impact with more precise measurement.

Identifying vulnerable groups

The results of the study not only indicate a health benefit for a public policy that curtails air pollution caused by industrial emissions and second hand smoke, but also call for heightened awareness by clinicians. Doctors should be making their patients aware of the risks of remaining in high pollution areas, suggesting that they work to limit their exposure, Dr. Gerber suggests.

Another purpose of this study was to begin identifying populations that are vulnerable to MI and re-occurring MI. Establishing the connection between air pollution and long-term risk for patients with cardiovascular diseases was an important step towards that goal.


Story Source:

The above story is based on materials provided by American Friends of Tel Aviv University. Note: Materials may be edited for content and length.


Cite This Page:

American Friends of Tel Aviv University. "Air pollution linked to chronic heart disease." ScienceDaily. ScienceDaily, 5 June 2012. <www.sciencedaily.com/releases/2012/06/120605121700.htm>.
American Friends of Tel Aviv University. (2012, June 5). Air pollution linked to chronic heart disease. ScienceDaily. Retrieved April 1, 2015 from www.sciencedaily.com/releases/2012/06/120605121700.htm
American Friends of Tel Aviv University. "Air pollution linked to chronic heart disease." ScienceDaily. www.sciencedaily.com/releases/2012/06/120605121700.htm (accessed April 1, 2015).

Share This


More From ScienceDaily



More Earth & Climate News

Wednesday, April 1, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Voice-Controlled GPS Helmet to Help Bikers

Voice-Controlled GPS Helmet to Help Bikers

Reuters - Innovations Video Online (Apr. 1, 2015) — Motorcyclists will no longer have to rely on maps or GPS systems, both of which require riders to take their eyes off the road, once a new Russian smart helmet goes on sale this summer. Jim Drury reports. Video provided by Reuters
Powered by NewsLook.com
Kashmir Mops Up After Heavy Flooding

Kashmir Mops Up After Heavy Flooding

AFP (Apr. 1, 2015) — The clean-up operation is in full swing in Indian Kashmir after heavy rain triggered flooding around the mountainous region. Duration: 00:41 Video provided by AFP
Powered by NewsLook.com
Tracking This Warbler's 'Extraordinary' Transoceanic Flight

Tracking This Warbler's 'Extraordinary' Transoceanic Flight

Newsy (Apr. 1, 2015) — The blackpoll warbler makes one of the longest nonstop flights in the animal kingdom: three days straight for some 1,500 miles. Video provided by Newsy
Powered by NewsLook.com
Brush Fire Threatens California Buildings

Brush Fire Threatens California Buildings

Reuters - US Online Video (Mar. 31, 2015) — A brush fire with zero containment burns in Apple Valley California, threatening over 100 structures and forcing the evacuation of local residents. Jillian Kitchener reports. Video provided by Reuters
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

 

Plants & Animals

Earth & Climate

Fossils & Ruins

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