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Secondhand smoke exposure may damage lining of blood vessels.

"For nonsmokers, exposure to low levels of secondhand smoke for just 30 minutes can cause significant damage to the lining of their blood vessels," according to a study published in the Journal of the American College of Cardiology. Investigators "used a smoking machine to produce specific particulate concentrations and measured its effects on 33 healthy nonsmokers ranging in age from 18 to 40 years old." Participants were divided into groups exposed to varying levels of secondhand smoke. The investigators found that "the brachial artery did not dilate properly in the people exposed to lingering secondhand smoke."

"According to the study's authors, the findings add to the growing body of evidence connecting environmental tobacco with heart problems and at increasingly lower concentration levels, as well as further underscore the value of and need for broader policies to ban public smoking."

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Publication:Pulse International
Article Type:Brief article
Geographic Code:9PAKI
Date:Sep 14, 2012
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