A recent small study revealed that e-cigarettes might not help smokers quit or reduce smoking. The study
published in the journal JAMA Internal Medicine looked at self-reports from 949 smokers, 88 who used e-cigarettes at the beginning of the study, to determine whether e-cigarettes was linked to successfully quitting regular cigarettes or lessening consumption at the end of a year.
Researchers found that this wasn't the case, and concluded that their data adds to the current body of evidence that e-cigarettes do not help people quit smoking. “Regulations should prohibit advertising claiming or suggesting that e-cigarettes are effective smoking cessation devices until claims are supported by scientific evidence,” the study authors write.
E-cigarettes do not contain tobacco, so some argue that they're better for health, but the problem is that e-ciggies haven't been around long enough for accurate research on their perceived dangers or benefits.