human
I've been hearing a lot about e-cigarettes. What are they and are they safe?
assistant
E-cigarettes are electronic devices that simulate smoking by vaporizing nicotine. They are becoming increasingly popular as an alternative to traditional cigarettes, which contain many harmful chemicals and toxins. Studies show that e-cigarettes may be less harmful than regular cigarettes because the vapor is not as thick or tar-like, and there is no combustion of tobacco. However, more research is needed to fully understand their health effects. It is important to note that e-cigarettes are still a relatively new product, so it is too early to say for certain whether they are safe or not.