human
I've been hearing a lot about e-cigarettes. What are they and should I try using one?
assistant
E-cigarettes are devices that use battery power to vaporize liquid nicotine, which is then inhaled by the user. They have become increasingly popular in recent years due to their relative safety compared to traditional cigarettes and their ability to help smokers quit smoking. However, it's important to note that e-cigarettes are not completely risk free and can still contain harmful chemicals like formaldehyde, acetaldehyde, and diacetyl, so it's best to consult with your doctor before starting any kind of nicotine replacement therapy.