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Cigarette smoke causes harmful changes in the lungs even at the lowest levels
Date:8/19/2010

ure smokers." The researchers tested urine levels of nicotine and cotinine -- markers of cigarette smoking within the body -- to determine each participant's category.

The research team then scanned each person's entire genome to determine which genes were either activated or deactivated in cells lining the airways. They found that there was no level of nicotine or cotinine that did not also correlate with genetic abnormalities.

"This means that no level of smoking, or exposure to secondhand smoke, is safe," says Dr. Crystal. He goes on to say that these genetic changes are like a "canary in a coal mine," warning of potential life-threatening disease, "but the canary is chirping for low-level exposure patients, and screaming for active smokers."

Dr. Crystal says that this is further evidence supporting the banning of smoking in public places, where non-smokers, and employees of businesses that allow smoking, are put at risk for future lung disease.


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Contact: Kaitlin Vangura
kvangura@rubenstein.com
212-821-0560
New York- Presbyterian Hospital/Weill Cornell Medical Center/Weill Cornell Medical College
Source:Eurekalert

Page: 1 2

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