E cigarettes contain hazardous substances, addictive and harmful Most e cigarettes contain nicotine, which is highly addictive. Putting maximum limits on the nicotine strength of e cigarettes, along with evidence based tobacco control strategies, may help reduce youth e cigarette use and increase quitting 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 and the Harm On the Environment