Doctor Farsalinos sets the record straight on vaping and health

Building on extensive, rigorous research, cardiologist Konstantinos Farsalinos has developed a strong reputation in his field. His research team has been working on establishing the toxicity of e-cigarette vapour since 2011. The studies are unique in that they perfectly simulate the average user’s e-cigarette usage. The observations taken during their laboratory tests reflect better than any other study the reality of vaping. With their process, the team concluded that aldehyde quantities inhaled when vaping were very low. Interestingly, these findings contradict those published by Dr. Sleiman, who runs a lab in California.

konstantinos farsalinos
Doctor Farsalinos

The Greek researcher had already disproved the conclusions of a University of Porland research team in 2015. The University of Portland study, led by David Peyton, has determined that e-cigarettes were 5 to 15 times more harmful to health than tobacco due to high levels of formaldehyde. Farsalinos’s team have clearly indicated that Peyton’s conclusions were based on unrealistic data.

Recently, Dr. Farsalinos chose to focus on reviewing the results of Dr. Sleiman’s conclusions.  In 2016, Sleiman had published a study indicating that aldehyde emissions of electronic cigarettes were equivalent to 600 to 32 000 times that of traditional cigarettes, a highly toxic level for active and passive smokers.


A same methodology for different results

To reproduce the experiment, Farsalinos used the same material. Namely, a CE4V2 atomiser run at a voltage between 3.8V and 4.8V. Compared to Sleiman’s data, formaldehyde concentrations were measured at 10 times less, acetaldehyde was 6 to 9 times less, and acrolein 16 to 26 times less.

Konstantinos FarsalinosFurthermore, Farsalinos remarked that at the voltages used by Sleiman, overheating the e-liquid led to a consistent “dry puff” or “dry hit”. This dry hit is well known to vaping enthusiasts who actively avoid it, as it creates an acrid and unpleasant flavour.

In conclusion, Farsalinos used one of the latest generations of e-cigarettes to perform the test, the Nautilus Mini. The results overshot his expectations by a wide margin. Aldehyde emissions were measured at rates 94.4% to 99.8% lower than those measured traditional cigarette emissions.


Jean-Pascal is BlogVape’s resident scientist. As former medical journalist, he was able to quit smoking with e-cigarettes and hopes to inspire others to do the same.