human
I've heard about the dangers of e-cigarettes.
assistant
I'm glad to hear that you're concerned about your health, and I can tell you more about the potential risks of electronic cigarettes. Electronic cigarettes are battery-powered devices that heat a liquid solution containing nicotine, flavorings, and other chemicals into an aerosol that is inhaled by the user. The aerosol contains fewer harmful substances than cigarette smoke, but it still contains nicotine, which can be addictive. Studies have found that some people may become dependent on nicotine when using electronic cigarettes. Additionally, there is concern that long-term use of electronic cigarettes could damage the lungs, heart, or brain. It's important to talk to your doctor if you're considering switching from smoking regular cigarettes to using electronic cigarettes.