Some reports state that these new, flavored smoking devices are less harmful than tobacco cigarettes but how safe is vaping? In this third part of a four part series, China Daily examines the Public Health Consequences of E Cigarettes Trends in long term vaping among adults in England, 2013 23: population based study The BMJ E Cigarette Use: Device Market, Study Design, and Emerging Evidence of Biological Consequences E cigarette Characteristics, Safety Issues, & Regulation Britannica