E cigarettes might harm lung tissue much like regular cigarettes do whether they contain nicotine or not a new study says. 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 Vaping and Heart Health: How E Cigarettes Affect Heart Rate, Blood Pressure E cigarettes: Not What It Seems Cape Girardeau County Public Health