heat not burning is the newer technology, and since we already have plenty of evidence on carbonyl levels in e-cigarette vapor, study’s results for IQOS are the most illuminating findings. The study showed that formaldehyde levels in heat not burning aerosol were 92% lower, for acetaldehyde levels were 85% lower, for acrolein they were 91% lower, for propionaldehyde they were 89% lower and for cronotaldehyde they were 95% lower. Overall, after a pack of cigarettes, using heat not burning instead of smoking would reduce your carbonyl exposure by 85 to 95%.
This represents a massive reduction compared to smoking. This is great news for the smokers of Japan – who’ve switched to heat not burning in substantial numbers – and for anybody else who has been able to make the switch to heat not burning.
The researchers also tested more intense puffing regimens, and this did change the results somewhat. The levels increased for more intense puffing, but they remained three to four times lower than corresponding levels in tobacco cigarettes.