heart

Air Pollution Has Negative Effects on Heart Health

Tuesday, November 04, 2008 by: Reuben Chow
Tags: air pollution, health news, Natural News

eTrust Pro Certified

Delicious Pin It
(NaturalNews) It would be natural to think that microscopic particles in polluted air would do damage to one's lungs, nose and throat. However, recent research published in Circulation: Journal of the American Heart Association has reported that such particles can in fact negatively affect the ability of the heart in people with serious coronary artery disease to conduct electrical signals.

Details of Study

The study looked at 48 coronary artery disease patients who lived in the Boston area, all of whom had previously experienced hospital procedures to open up or examine their coronary arteries.

The group of them had been hospitalized because of deteriorating symptoms of stable coronary artery disease, unstable angina, or a heart attack. Their median age was 57 years and more than 80% were men. In addition, 1 out of 4 had diabetes, while 2 out of every 5 had had a heart attack.

The study team followed up with the patients about two to four weeks post-discharge, and then another three more times at interval periods of about 3-months.

Holter monitors, which are portable electrocardiographs, were used to record the participants' heart activity and to help obtain indications of events such as lack of blood flow to the heart or a heart muscle which was inflamed. Should such situations present themselves, a conductivity change, called an "ST-segment depression", would show up on electrocardiograms.

These measurements were then compared with the levels of certain pollutants, including particulate matter with a diameter less than 2.5 micrometers (or 1/10,000th of an inch), also called PM2.5, and black carbon, which is produced during the incomplete combustion of fossil fuels.

For all the pollutants which were included in the analysis, mean 24-hour levels were within the National Air Quality Standard limits. This meant that air quality was generally considered healthy.

Findings of Study

"We found that an elevation in fine particles, from non-traffic as well as traffic sources, and black carbon, a marker for traffic, predicted ST-segment depression," said Diane R. Gold, M.D., M.P.H., senior author of the study, which involved researchers from the Harvard School of Public Health and the Harvard Medical School in Boston, Mass.

"Effects were greatest within the first month after hospitalization, and for patients who were hospitalized for a heart attack or had diabetes," added Gold.

Another pollutant associated with ST-segment depression was sulfur dioxide, which can also originate from non-traffic sources. There was no significant correlation obtained between ST-segment depression and the levels of carbon monoxide, although it should be noted that levels of the latter were generally low for this study.

Broadly speaking, these findings are consistent with previous studies, which have shown the link between increased particulate air pollution and risk of heart attack or cardiac death, as well as exposure to road traffic triggering off heart attacks. For example, in a study published in 2002, it was reported that cardiovascular deaths decreased by 10 percent in Dublin, Ireland, after coal sales were banned and concentrations of black smoke in the air dropped by 70 percent within the next 3 years.

While the ST-segment changes which the study team observed were not associated with actual physical symptoms in the subjects, nevertheless, their findings provide further evidence that unclean air can affect heart health, either through reduction of blood flow or heart muscle inflammation.

Key Takeaway

While the question remains as to how air pollution causes ST-segment depression Gold said that "further research is needed to evaluate whether the pollution-related ST-segment depression that we see is related to increased heart muscle inflammation, reduced oxygen flow, oxidative stress, or increased risk of arrhythmias" enough is probably known for now for those at risk to take some action.

"We think that our findings, which are definitely subclinical, may represent a process that increases clinical risk for people with symptomatic coronary artery disease," Gold said. The research team also said that their findings suggest that physicians and heart patients be extra careful in the weeks immediately after discharge from hospital.

If you or a loved one has heart problems, then you may want to take note.

The American Heart Association recommends that some heart patients, especially those who have had a heart attack, do not drive for two to weeks after being discharged and also avoid driving in heavy traffic because of the stress such a situation creates.

"Our study provides additional rationale to avoid or reduce heavy traffic exposure after discharge, even for those without a heart attack, since traffic exposure involves pollution exposure as well as stress," said Gold.

Certain additional precautionary steps may also be useful, such as making sure one is not exposed to other forms of air pollution, for example construction sites, and the use of air purifiers to improve the quality of air in the home.

Main Sources

Air Pollution Can Hinder Heart's Electrical Functioning (http://www.sciencedaily.com/releases/2008/09...)

Circulation website

About the author

Reuben Chow has a keen interest in natural health and healing as well as personal growth. His website, All 4 Natural Health, offers a basic guide on natural health information. It details simple, effective and natural ways, such as the use of nutrition, various herbs, herb remedies, supplements and other natural remedies, to deal with various health conditions as well as to attain good health. His other websites also cover topics such as depression help, omega 3 fatty acids, as well as cancer research and information.

Get breaking news alerts on GMOs, fluoride, superfoods, natural cures and more...
Join over four million monthly readers. Email privacy 100% protected. Unsubscribe at any time.


Have comments on this article? Post them here:

comments powered by Disqus

Take Action: Support NaturalNews.com

Email this article to a friend

Permalink to this article:

Reprinting this article: Non-commercial use OK, cite NaturalNews.com with clickable link.

Embed article link: (copy HTML code below):
Most Popular
Today | Week | Month | Year

See all Top Headlines...



GET SHOW DETAILS
+ a FREE GIFT

Now Available at ShopNaturalNews.com

O3 Essentials OraJuvenate™
A powerful, cleansing dental cream for maximum oral/dental health.
New Cancer Solutions
Over 3 hours of content covering today’s best cancer tests, how to kill cancer cells and the best diets and exercise routines.
Freeze-Dried 100% Organic Whole Corn
Our freeze-drying method preserves taste, texture and nutrients better than any other food preservation method ever invented.
Fenix TK35 Flashlight
Tough, waterproof, extremely bright and it’s touted to throw an 800+ lumen beam more than 1,000 feet into the night.
Inca Treasure Smoothie Pack
This pack of our four most popular superfoods from South America is the perfect combo pack for smoothie lovers.
Pink Himalayan Salt
This salt delivers significant levels of magnesium, zinc and selenium, with trace levels of dozens of other elements.
Pinhole Glasses - Aviator Style
Pinhole glasses are becoming famous for helping people improve their vision without the risks of laser surgery.
Oxy-Rich Facial Serum
O3 Essentials Jojoba Oxy-Rich Facial Serum is cellular nourishment for your skin. Helps smooth fine lines while enhancing tissue elasticity.
Freeze-Dried 100% Blackberry Halves
Our freeze-dried blackberry halves are grown in Serbia under strict organic standards.

Also on NaturalNews:

Health Ranger Videos
Activist music
CounterThink Cartoons
Food documentaries
FREE Special Reports
Podcasts
Colloidal Silver

Advertise with NaturalNews...

Support NaturalNews Sponsors:

Advertise with NaturalNews...

Most Popular Stories

Flu shot kills 19-year-old, but vaccine industry still has total immunity against lawsuits
Here's a nutty fact: Eating more tree nuts lowers the risk of all-cause death by up to 20 percent
Six important facts you're not being told about lost Malaysia Airlines Flight 370
Malaysia Airlines Flight 370 now clearly a government cover-up: All evidence contradicts official story
10 other companies that use the same Subway yoga mat chemical in their buns
BLM fracking racket exposed! Armed siege and cattle theft from Bundy ranch really about fracking leases
High-dose vitamin C injections shown to annihilate cancer
U.S. treating meat with ammonia, bleach and antibiotics to kill the '24-hour sickness'
USDA to allow U.S. to be overrun with contaminated chicken from China
Vaccine fraud exposed: Measles and mumps making a huge comeback because vaccines are designed to fail, say Merck virologists
Battle for humanity nearly lost: global food supply deliberately engineered to end life, not nourish it
Diet soda, aspartame linked to premature deaths in women

25 Amazing Facts About Food

This FREE downloadable report unveils a collection of astonishing and little-known facts about the food we eat very day. Click here to read it now...

 

Resveratrol and its Effects on Human Health and Longevity - Myth or Miracle.

Unlock the secrets of cellular health with the "miracle" nutrient Resveratrol Click here to read it now...

 

Nutrition Can Save America

FREE online report shows how we can save America through a nutrition health care revolution. "Eating healthy is patriotic!" Click here to read it now...

The Healing Power of Sunlight and Vitamin D

In this exclusive interview, Dr. Michael Holick reveals fascinating facts on how vitamin D is created and used in the human body to ward off chronic diseases like cancer, osteoporosis, mental disorders and more. Click here to read it now...

Vaccines: Get the Full Story

The International Medical Council on Vaccination has released, exclusively through NaturalNews.com, a groundbreaking document containing the signatures of physicians, brain surgeons and professors, all of which have signed on to a document stating that vaccines pose a significant risk of harm to the health of children. Click here to read it now...

Health Ranger Storable Organics

GMO-free, chemical-free foods and superfoods for long-term storage and preparedness. See selection at www.StorableOrganics.com



Recommended Resources On:

Natural News trends
Health Ranger news
Natural News GMOs
Mike Adams tracker
Natural News photos
Natural News Global
Natural News in focus
Natural News connect
Natural News shocking stories
Natural News radar
GMOs
Quackwatch
Vaccines
Health freedom
Dr. Paul Offit

This site is part of the Natural News Network © 2014 All Rights Reserved. Privacy | Terms All content posted on this site is commentary or opinion and is protected under Free Speech. Truth Publishing International, LTD. is not responsible for content written by contributing authors. The information on this site is provided for educational and entertainment purposes only. It is not intended as a substitute for professional advice of any kind. Truth Publishing assumes no responsibility for the use or misuse of this material. Your use of this website indicates your agreement to these terms and those published here. All trademarks, registered trademarks and servicemarks mentioned on this site are the property of their respective owners.

eTrust Pro Certified Android app on Google Play

Sign up for the FREE Natural News Email Newsletter

Receive breaking news on GMOs, vaccines, fluoride, radiation protection, natural cures, food safety alerts and interviews with the world's top experts on natural health and more.

Join over 7 million monthly readers of NaturalNews.com, the internet's No. 1 natural health news site. (Source: Alexa.com)

Your email address *

Please enter the code you see above*

No Thanks

Already have it and love it!

Natural News supports and helps fund these organizations:

* Required. Once you click submit, we will send you an email asking you to confirm your free registration. Your privacy is assured and your information is kept confidential. You may unsubscribe at anytime.