 When it comes to vaping, the truth can get cloudy. So let's make it clear. Vaping is not safe for kids, teens, or young adults. It's just not. Because vaping can put microscopic particles into your lungs. And dangerous things like metals and volatile organic compounds into your body. And nicotine, the same highly addictive substance found in regular cigarettes. Nicotine can harm a person's brain development through their mid-20s.