Does vaping (using e cigarettes) make a difference to our health and are there harms with second hand vaping? iHealth Facts 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 Memorial Regional Health: E cigarettes a pathway to addiction Teen use of e cigarettes is rising, along with risks for long term health consequences CraigDailyPress.com E Cigarettes: Know the Health Risks Department of Health Effects of E Cigarettes on Oral Health: Impacts and Prevention Tips