Navigation Links
Even Brief Ozone Exposure May Raise Fatal Heart Risk: Study
Date:6/25/2012

MONDAY, June 25 (HealthDay News) -- Even short-term exposure to ground-level ozone, a harmful air pollutant, can cause potentially fatal changes to your cardiovascular system, a new U.S. government study shows.

Ground-level ozone is created when pollutants from industry, vehicles, chemical solvents and power plants react in sunlight. Levels are highest in the hot, summer months.

The study, published June 25 in Circulation, "provides a plausible explanation for the link between acute ozone exposure and death," study lead author Robert Devlin, senior scientist at the U.S. Environmental Protection Agency's (EPA) National Health and Environmental Effects Research Laboratory in Research Triangle Park, N.C., said in an American Heart Association news release.

The EPA estimates that 40,000 to 50,000 people die in the United States each year because of air pollution, but the mechanism behind these deaths isn't fully understood.

For the study, researchers exposed 23 volunteers, between 19 and 33 years old, to a two-hour dose of ozone equivalent to the EPA's eight-hour ozone standard of 0.076 parts per million.

Within two weeks, the participants were also exposed to clean air for two hours. During both exposures, the young adults alternated between 15-minute intervals of rest and stationary cycling.

Although none of the participants complained of symptoms after inhaling ozone, tests immediately after exposure revealed the young people had serious ozone-induced vascular changes compared to clean-air exposure. These changes included:

  • An increase in a signature marker of inflammation that may play a key role in heart disease.
  • Reduced ability to dissolve blood clots that could block arteries.
  • Changes in heart rhythm.

The researchers noted these changes persisted until the morning after ozone exposure. They also pointed out the changes were reversible among these healthy young people.

However, the investigators said previous studies have shown that other air pollutants, such as tiny airborne particles known as particulate matter, may be linked to death in older people with heart disease. They suggested ozone and particulate matter may have similar, potentially deadly effects.

People can protect themselves by reducing their ozone exposure, the researchers advised.

You can do this by paying attention to air-quality alerts and limiting the time you are active outdoors when air quality is poor, they suggested.

More information

The U.S. Environmental Protection Agency has more on how to limit ozone exposure.

-- Mary Elizabeth Dallas

SOURCE: American Heart Association, news release, June 25, 2012


'/>"/>
Copyright©2012 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Brief training program improves resident physicians empathy with patients
2. Sun exposure and cutaneous HPV infection found synergistic in skin cancers, Moffitt says
3. HIV Exposure Before Birth May Raise Kids Risk of Hearing Loss
4. Sun exposure and sun-sensitive skin type decreased risk for pancreatic cancer
5. How MyTownInsurance.com Helps Insurance Carriers Manage their Loss Exposure through On-Line Marketing
6. BPA exposure effects may last for generations
7. New research showing how real-life exposure to violence disrupts a childs sleep habits
8. Taking Anti-HIV Meds Prior to Exposure May Help Prevent Infection
9. Education May Protect Brain From Exposure to Solvents
10. Novel biomarkers reveal evidence of radiation exposure
11. Prenatal exposure to pollution especially dangerous for children with asthma
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Even Brief Ozone Exposure May Raise Fatal Heart Risk: Study
(Date:10/13/2017)... ... October 13, 2017 , ... As health professionals work to improve ... engagement.” The patient is doing more than filling out a survey; in many cases ... an increasing emphasis in health care and research on the importance of active engagement ...
(Date:10/13/2017)... ... October 13, 2017 , ... The American Board of Family Medicine's ... President and Chief Executive Officer, succeeding Dr. James C. Puffer upon his retirement. Dr. ... 2018 until Dr. Puffer’s retirement at the end of 2018. Upon assuming the role ...
(Date:10/13/2017)... ... October 13, 2017 , ... PurhealthRX , a leading Health and ... Applying the Purzorb™process to full spectrum CBD oil will revolutionize the rapidly growing CBD ... that can be easily incorporated into liquid products, while reducing costs to end users. ...
(Date:10/13/2017)... ... , ... Lori R. Somekh, founder of the Law Office of Somekh ... law and special needs planning attorneys. “Membership in ElderCounsel helps our office remain up ... network with elder law attorneys nationwide,” said Somekh. , ElderCounsel was ...
(Date:10/13/2017)... ... October 13, 2017 , ... Many families have long-term ... long-term care insurance companies have a waiver for care if the client has a ... when the family pays for care, is often waived, so the benefits from their ...
Breaking Medicine News(10 mins):
(Date:10/11/2017)... , Oct. 11, 2017  Hill-Rom Holdings, Inc. ("Hill-Rom") ... Surgical facility in Las Piedras, Puerto Rico ... and blades. ... the facility sustained minor structural damage, temporary loss of ... Repairs have been completed, manufacturing operations have resumed, and ...
(Date:10/7/2017)...   Provista, a proven leader in the ... purchasing power, today announced a new resource area on ... is the online home for case studies, articles ... news releases, slideshows and events. ... resources at their fingertips, viewers can also watch short ...
(Date:10/4/2017)... 4, 2017  According to the Centers for Disease Control and Prevention ... . PhysicianOne Urgent Care is helping communities across Massachusetts ... , by offering no-cost* flu shots through the end of the month. ... health insurance regulations. ... to get a flu shot is by the end of October, according ...
Breaking Medicine Technology: