First to comprehensively examine scientific evidence about the safety and effectiveness of electronic cigarettes, Michael Siegel, MD, has 25 years of experience in the field of tobacco control and claims no financial interest in e-cigarettes. Siegel, MD, is a professor of community health sciences at Boston University School of Public Health (BUSPH).


What is an Electronic Cigarette?

The report, published online in the Journal of Public Health Policy, reviewed 16 laboratory studies that identified the components in electronic cigarette liquid and vapor. The authors (Michael Sigel, MD and Zachary Cahn, a graduate student in the Department of Political Science at UC Berkeley) found that carcinogen levels in electronic cigarettes are up to 1,000 times lower than in tobacco cigarettes.

Evidence Suggests E-Cigs Safer Than Cigarettes, Researcher Claims

["The FDA and major anti-smoking groups keep saying that we don't know anything about what is in electronic cigarettes," Siegel said. "The truth is, we know a lot more about what is in electronic cigarettes than regular cigarettes."] For more information, visit

Michael Siegel discusses electronic cigarettes at the 2009 Bicknell Conference

"Taking these products off the market would force thousands of users to return to cigarette smoking," Siegel said. "Why would the FDA and the anti-smoking groups want to take an action that is going to seriously harm the public's health? The only ones who would be protected by a ban on e-cigarettes are the tobacco companies, as these new products represent the first real threat to their profits in decades."

What is an Electronic Cigarette?