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Secondhand Smoke Packs Heavy Toll; Nearly as Significant as Smoking

Armen Hareyan's picture

Second Hand Smoking

Compelling scientific evidence is accumulating about the substantial and rapid impact on the heart and blood vessel system from exposure to secondhand smoke, according to a literature review reported in Circulation: Journal of the American Heart Association.

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"Despite the much lower dose that nonsmokers receive compared to smokers, secondhand smoke can have effects nearly as significant as active smoking," said study author Stanton A. Glantz, Ph.D., a professor of medicine at the University of California, San Francisco.

In a meta-analysis of 29 studies researchers reviewed the mechanistic effects of secondhand smoke on the cardiovascular system, emphasizing research published in the past decade.

They found that the dose of smoke delivered to an active smoker is at least 100 times the dose delivered to a passive smoker.