Teen vaping 'epidemic': FDA to limit sale of sweet e cigarette flavors E cigarettes more effective with nicotine studies NZ Herald Think Before You Vape! Vaping isn't harmlesse cigarettes can contain nicotine, heavy metals, and harmful chemicals. Risks include addiction, lung injury, and heart issues. Protect your health and make informed choices! # E cigarettes need tight regulation, WHO says, citing health concerns South China Morning Post Scripps Health E cigarettes remain the most commonly used tobacco product among middle and high school students in the United States, according to the Instagram E Cigarettes and Their Use in the U.S. and Kansas Kansas Health Institute