> PMI is pushing the IQOS, a cigarette device that heats tobacco to deliver nicotine without the smoke and tar that cause diseases including cancer. It's not c

> PMI is pushing the IQOS, a cigarette device that heats tobacco to deliver nicotine without the smoke and tar that cause diseases including cancer. It's not clear how much safer heated tobacco products (such as IQOS) are than traditional cigarettes. Most studies are sponsored by the tobacco industry. https://www.sciencedirect.com/science/article/abs/pii/S0761842518303632 https://www.sciencedirect.com/science/article/abs/pii/S07618... > Of the 100 papers published in 2008–2018, 75 have authors affiliated or linked to TI [tobacco industry]. Emissions contain gases, droplets and solid particles, so are smokes. The main products are: THS2.2 (Iqos®) which heats mini-cigarettes at 340 °C, the THP1.0 (Glo®) which heats at 240 °C sticks delivering about half as much nicotine, Ploom® which uses reconstituted tobacco microcapsules heated at 180 °C. Under the experimental conditions, there is a reduction of toxic emissions and biological effects, but the expected risk reduction is not demonstrated. Symptoms related to passive smoking are described. The 4 epidemiological articles report that heated tobacco is used in 10 to 45% of cases by non-smokers and demonstrate the effectiveness of TI promotion campaigns. Thus, the THS2.2 is more a gateway to smoking (20%) than an exit door (11%); moreover, it is not expected risk reduction among the 69% who are mixed users.