Polluted air can cause the development of atherosclerosis


06/05/2013

The impact of air pollution on the human body for a long time, accelerates the development of atherosclerosis, "polluting the arteries", as shown by a new U.S. study. Associate professor of epidemiology in the UM School of Public Health in conjunction with John Searle Professor of environmental and occupational health sciences at the University of Washington and Joel Kaufman conducted a study which found that concentrations exceeding PM2.5 - fine particles of air pollution - are associated with the rapid significant thickening of the blood vessel that provides blood flow to the neck, head and brain, or rather the two inner layers of the carotid artery.

While a reduction of particulate air pollutants over time contribute to the gradual decrease in thickness of the blood vessel.

The development of atherosclerosis in the arteries due to the thickness of the blood vessel. This provision applies even to people with no obvious symptoms of cardiovascular diseases. "Our results allow us to understand the reason why the polluted air can cause increased incidence of heart attacks and strokes, which was traced to a number of other studies," - said Adar.

5362 inhabitants 6 major cities in the United States aged 45-84 were participants in a study to study the relationship of atherosclerosis with air pollution. Assessing the level of air pollution in the home each volunteer implied ultrasound measurements of blood vessels at intervals of three years.

Even after having been taken into account factors such as smoking, the researchers found that the thickness of the carotid arteries on average increased by 14 microns per year. Meanwhile, the people who were exposed to excess levels of air pollution in your home, thickened blood vessels much faster than the other participants, the people living in the same region of the capital.

"Combining these results with other clearly indicates that living in a polluted part of the metropolis may increase by 2 percent risk of having a stroke," - the researchers concluded.


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