"There are at least two dozen new studies on vaping published every week. Many of them are about vaping and health. They range from medical studies on vaping health risks to analysis of e-liquid or constituents in vapour to research on vaping and nicotine addiction. Some are released with a lot of fanfare, and create a huge media stir — often because of alarming claims by the scientists or, more often, by the university press office or outside groups.
No vaping research concludes that vaping is “safe”. Anytime you inhale a foreign substance or use a drug like nicotine, there is some risk built into the activity. The scientific consensus is that vaping is, by and large, safer than smoking cigarettes. But beyond agreement that vaping poses fewer risks than smoking, opinions on the possible health and side effects of vaping vary widely.
How does vaping affect heart, lung, and circulatory health?
There is no true long-term vaping research, simply because it hasn’t been around long enough — but also because most vapers were previously smokers, and it is probably impossible to separate the effects caused by years of smoking from signs of potential health problems caused by vaping. That’s what makes this 2017 vape study unique. It tracked health markers for 3.5 years of a group of vapers who had never smoked.
The researchers carefully measured markers of heart, lung, and circulatory health, and compared them to a control group of non-vapers who had also never smoked. The findings were uniformly positive. The vapers’ health markers were no worse than the non-smokers’ — even those who vaped the most."
“Although it cannot be excluded that some harm may occur at later stages, this study did not demonstrate any health concerns associated with long-term use of [e-cigarettes] in relatively young users who did not also smoke tobacco,” wrote the authors.
Health impact of E-cigarettes: a prospective 3.5-year study of regular daily users who have never smoked — Riccardo Polosa, Fabio Cibella, Pasquale Caponnetto, Marilena Maglia, Umberto Prosperini, Cristina Russo, Donald Tashkin