human
I've heard a lot about the dangers of e-cigarettes. Is there any evidence that they're safe?
assistant
There is some research showing that vaping may be less harmful than smoking cigarettes, but it's still early days and more studies need to be done. The World Health Organization (WHO) has recommended that people who smoke switch to e-cigarettes instead of continuing to smoke regular cigarettes, as switching could reduce their risk of developing serious diseases such as lung cancer or heart disease.