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Health Agencies Update
July 28, 2010

US Cigarettes

JAMA. 2010;304(4):398. doi:10.1001/jama.2010.970

US smokers are exposed to higher levels of cancer-causing compounds than are smokers in other countries, according to a study by scientists at the US Centers for Disease Control and Prevention.

The researchers compared the levels of tobacco-specific nitrosamines (TSN) in cigarette butts and TSN metabolites in urine collected from 126 smokers from the United States, Canada, the United Kingdom, and Australia over a 24-hour period (Ashley DL et al. Cancer Epidemiol Biomarkers Prev. 2010;19[6]:1389-1398). They found that TSN levels are significantly higher in US cigarettes and that levels of TSN metabolites are higher in the urine of US smokers than those in the urine of smokers from other countries.

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