human
I've heard about a new type of e-cigarette. What are these and are they safe?
assistant
These are electronic cigarettes that use nicotine, but not tobacco. They are designed to mimic the look and feel of regular cigarettes, but without the smoke or ash. Some people think that they are safer than regular cigarettes because they don't contain the same amount of tar and other chemicals. However, there is still some risk involved with using them, so it's important to talk to your doctor before starting to use them.