Science - Clearing the Air

Op-Ed: Harry Shapiro – Global State of Tobacco Harm Reduction

This op-ed is by Harry Shapiro, author and tobacco harm reduction expert at the Global State of Tobacco Harm Reduction (GSTHR). As the new Global State of Tobacco Harm Reduction report shows, THR inexorably marches on, but the spectre of denial is…

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Youth vaping ‘highly unlikely’ to be major source of premature death, new study finds

New modelling of more than four million young Americans suggests adolescent vaping is highly unlikely to become a major cause of premature death. Even under the study’s most pessimistic main scenario, the average projected impact was equivalent to around 31 days of…

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Youth vaping study retracted after analysis errors affected results

A study examining why US teenagers start and continue vaping has been retracted after problems were found in its data analysis. The Journal of Adolescent Health says the flaws affected the results reported in the paper. The retraction was requested by both…

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US youth vaping rate down 74% as scientist questions ‘epidemic’ label

Current vape use among US middle and high school students fell from about 20 per cent in 2019 to 5.2 per cent in 2025, a decline of roughly 74 per cent. Cigarette smoking stood at 1.4 per cent, while 7.2 per cent…

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Full switch from smoking to vaping linked to lower heart risk, review finds

Exclusive vaping substantially reduces exposure to toxic chemicals linked to cardiovascular disease compared with cigarette smoking, the review found. Smokers who switched completely showed favourable changes in markers linked to inflammation, blood clotting, cholesterol and blood-vessel health. Population studies generally associated exclusive…

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Studies link vaping to lower death risk in cancer patients and reduced carcinogen exposure

A South Korean study of 46,834 cancer patients found that deaths occurred at a 16 per cent lower rate among those who used vapes after diagnosis than among those who continued smoking. Vape users also had a 28 per cent lower rate…

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US adults are moving from smoking to vaping, US study finds

Exclusive cigarette smoking fell sharply among US adults who used cigarettes or vapes between 2014 and 2024. Exclusive vaping rose from 5.5% to 39.9% of cigarette and/or vape use over the same period. The shift was strongest among adults aged 18 to…

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Fruit-flavoured vapes lead UK stop-smoking services as quit rates beat other support

A new study found vaping products are now widely used by UK Stop Smoking Services. In the detailed results, 27 out of 28 local authorities reported providing vapes to help smokers quit. Every service supplying vapes offered flavoured products, with fruit offered…

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Smokers three times more likely to quit with nicotine vapes, trial finds

Smokers given a 5% nicotine vape were more than three times as likely to quit cigarettes after six weeks as those given a nicotine-free vape. The trial found 36.5% of people in the nicotine vape group stopped smoking, compared with 11.5 per…

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