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Risk of Heart Attack & Stroke for Women Increased by Air Pollution

A recent U.S. study published by the New England Journal of Medicine has found significant links between small particle air pollution and heart disease and strokes in women. The researchers were based at the University of Washington and used data provided from the Women's Health Initiative (WHI) Observational Study involving 65,893 women in and around 36 U.S. cities. Of major importance in the WHI study was the establishment of a stronger statistical association between fine particulate air pollution and death from coronary heart disease than that found in previous studies.

The average particulate levels in the study ranged from about 4 micrograms to almost 20 micrograms per cubic meter. The researchers found that each 10 microgram rise was matched by a 76% increase in the chances of death from heart disease or stroke. Many of these particles are so tiny that it would take over 2 dozen to equal the thickness of a human hair.

It has long been known that particulates can contribute to lung and heart disease, with women perhaps more susceptible than men to heart problems because of their smaller blood vessels and other biological differences. Researchers believe that when dirty air is inhaled, invisible pollutants can become embedded in the lungs or travel through the bloodstream. They may then harden arteries or cause inflammation leading to cardiac disease or stroke. Unlike earlier studies, this one looked not just at deaths, but also at heart attacks, coronary disease, strokes and clogged arteries. In their calculations, the researchers tried to adjust for lower income and other health problems that have been blamed for the higher rates of disease in past studies.

Indoor air quality professionals have known for years that fine particulate air pollution can cause respiratory problems, especially in infants, the elderly and those with compromised immune systems. The Environmental Protection Agency tightened its daily limit on exposure to fine particulates in September 2006, but left the annual limit at a concentration of 15 millionths of a gram for every cubic meter of air. Many health professionals and air quality experts felt that the new EPA rules didn't go far enough to protect the public. Several environmental groups and individual states sued the EPA last year for disregarding advice from its own scientists regarding tighter rules on fine particulate matter. The EPA's Air Quality Index provides daily updates, including fine particle pollution and can be found at http://airnow.gov/

Although there isn't much you can do about outdoor air pollution, indoor air quality is something you can have control over. Commercial air cleaners are not just for businesses, they have residential applications as well. For example, the SE-400 can remove large quantities of airborne particles that enter your home. The unit features a tightly woven aluminum mesh pre-filter that first removes large particles. Next, the smaller particles are trapped by the collector cells, which collect the particles like strong magnets. Help reduce the threat to your health from fine particulate matter by using superior commercial air cleaners.

Chuck Jaymes

p>About the Author - Chuck Jaymes is an indoor air quality professional and
offers reviews and comparisons about
Commercial Air Cleaners
for OscarAir, Inc.

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