The study, funded by the National Institute on Drug Abuse, the National Cancer Institute and the Cancer Intervention and Surveillance Modeling Network, found that under most plausible scenarios e-cigarettes and other vapor products have a generally positive public health impact.
Multiple studies have sought to assess the impact of e-cigarettes on public health, with conflicting results. Earlier this year a University of California study of high school students found that those who used e-cigarettes were more than twice as likely to also smoke traditional cigarettes.
The latest study differs from prior ones because it summarizes patterns of use from national data, the authors said. Previous studies have used local data that may have unusual patterns and are not necessarily representative of the whole country.