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Study shows levels of selected carcinogens and toxicants in vapour from electronic cigarettes. (Tobacco Control Journal)

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According to a study published on March 6, 2013 in the Tobacco Control Journal, e-cigarette vapours contained some toxic substances. The levels of the toxicants were 9–450 times lower than in cigarette smoke and were, in many cases, comparable with trace amounts found in the reference product. The study was conducted by several researchers  and authors by affiliates from the department of Health Behavior, Division of Cancer Prevention and Population Sciences, Roswell Park Cancer Institute, Buffalo, New York.

The study concluded that the the researchers findings were consistent with the idea that substituting tobacco cigarettes with e-cigarettes may substantially reduce exposure to selected tobacco-specific toxicants. E-cigarettes as a harm reduction strategy among smokers unwilling to quit, warrants further study.

Read the abstract here and the full study at Tobaccocontrol.bmj.com