The document discusses electronic cigarettes as a possible alternative to traditional tobacco cigarettes. It describes how electronic cigarettes were invented in 1963 as a "smokeless non-tobacco cigarette" that uses heated liquid instead of smoke. The document notes that electronic cigarettes allow users to regulate their nicotine intake, mimic the smoking process, produce no cigarette butts, and come in various flavors. Electronic cigarettes do not contain tobacco so there is no risk of cancer, unlike traditional cigarettes which are linked to diseases. The document recommends that smokers shift to using electronic cigarettes to gradually quit smoking traditional cigarettes in order to avoid health risks from carcinogens.