Have you been thinking about trying vapes or e cigarettes? Think again! Most e cigarettes contain nicotine and other harmful substances. Some products claiming to be nicotine free have been found to contain nicotine. Nicotine E cigarettes may be more harmful than beneficial, according to evidence based research Steemit Switching to E Cigarettes: Healthier Alternative or Hidden Risks? Health effects of electronic cigarettes Wikipedia E cigarettes might harm lung tissue much like regular cigarettes do whether they contain nicotine or not a new study says.