Former smokers who have used e-cigs as a way to quit smoking say they are more effective than other approved cessation tools. The critics say there is too much unknown about their health effects to recommend them as a smoking cessation device.
Cigarette smoking has become significantly less popular in the U.S. over the past decade, but it remains a public-health scourge.
Some people say electronic cigarettes can help wean smokers off tobacco, at little risk to their health. For others, both of those assertions are false.
Jed E. Rose, a professor of psychiatry and behavioral sciences and director of the Duke Center for Smoking Cessation at Duke University, makes the case for e-cigarettes as a smoking-cessation tool. Arguing against it is Pamela Ling, a professor of medicine with the Center for Tobacco Control Research and Education at the University of California, San Francisco.