An electronic cigarette, also known as an e-cigarette or vape, is an electronic device that simulates tobacco smoking. It consists of an atomizer, a power source such as a battery, and a container such as a cartridge or tank filled with liquid. Instead of smoke, the user inhales vapor, which is why using an e-cigarette is often called "vaping". The liquid solution that is vaporized is called e-liquid, which usually contains propylene glycol and/or glycerin, nicotine, and flavoring. E-cigarettes can be activated by taking a puff or pressing a button, and some look like traditional cigarettes while others resemble pens or USB flash drives.
The health risks of e-cigarettes are not yet fully known, but they are thought to be safer than traditional tobacco products. However, e-cigarettes are not safe for youth, young adults, and pregnant women, as well as adults who do not currently use tobacco products. The liquid in e-cigarettes can contain nicotine, which is highly addictive and negatively affects adolescent brain development. Additionally, when the e-liquid heats up, more toxic chemicals can be formed. While e-cigarettes have the potential to benefit adult smokers who are not pregnant if used as a complete substitute for regular cigarettes and other smoked tobacco products, scientists still have a lot to learn about whether e-cigarettes are effective for quitting smoking.
