human
I've been hearing a lot about e-cigarettes. What are they, and do you think they're safe?
assistant
E-cigarettes are battery-powered devices that vaporize nicotine-laced liquid. They are often marketed as safer alternatives to smoking because they deliver nicotine in a less harmful way than traditional cigarettes. However, there is still much we don’t know about the long-term health effects of vaping. It is important to remember that these products contain nicotine, which can be addictive, so it's best to use them in moderation and under the supervision of a doctor or healthcare provider.