Secondhand Smoke Exposure Falls by Half in the US

February 4, 2015 1:49 PM

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According to a report by the US Centers for Disease Control and Prevention (CDC), secondhand smoke exposure in the US has dropped by almost half over the last 10 years.

From the report, it was found that the percentage of people in America exposed to secondhand smoke reduced from 52.5% in 1999-2000 to 25.3% in 2011-2012. For the study, researchers assessed exposure using cotinine. Cotinine is a marker of secondhand smoke found in the blood.

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