How have e cigarettes changed over time? FACT: Most e cigarette users also smoke cigarettes, a pattern known as dual use. This means the tobacco industry isn't helping people quit; it's sustaining addiction through another product. While the industry claims Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times What don't we know about vaping? Research!America We were shocked': Vaping considerably increases lung cancer risk among people who smoke