Study: Pollution Leaves Women at Greater Risk for Heart Disease, Death

The most rigorous study of its kind to link pollution and heart disease has found that women who live in areas with higher levels of pollution are at much greater risk of developing and dying from cardiovascular disease, according to the New England Journal of Medicine.

The study suggests women living in cities with the highest levels of air particles, such as Los Angeles, Atlanta and New York, were 76 percent more likely to die from a heart attack or stroke than women breathing the cleaner air of Honolulu or Tucson, Ariz.

According to the study, while doctors have known air pollution can be bad for the heart, they didn't know how severe the health effects were.

"The magnitude of the findings are substantially higher than what's been seen in prior research on long-term effects of air pollution," said Dr. Joel Kaufman at the University of Washington.

The study monitored the health of more than 65,000 post-menopausal women for up to nine years and tracked the air quality near their homes, checking the level of tiny particles spewed from cars, trucks and power plants.

It used pollution meters, which are scattered in virtually every metropolitan area in the country, to measure the amount of particles in the air. The federal Environmental Protection Agency compiled the results.

Consistent Regardless of Weight or Smoking History

The study's findings were consistent regardless of a woman's weight or smoking history, blood pressure or cholesterol levels.

"The particles affect the lining of the blood vessels, which makes it easier for cholesterol plaque to form, and also it makes the blood stickier so clots are more likely to form," said Dr. Leslie Cho of the Cleveland Clinic.

Air particles are harmful to both women and men, but women may be more vulnerable, in part, because they have smaller coronary arteries.

While no one is suggesting they move out of pollution "hot spots," doctors say women should focus on those heart disease risk factors they can control.

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