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 Vaping Student Health & Well Being E Cigarettes and Vaping Tear Pad Health Edco New warning labels for e cigarettes E Cigarette Brands Are Skirting the Rules About Health Warning Labels on Instagram, Study Finds The Brink Boston University