Theres no easy answer to that question because it depends
Compared with exclusive e-cigarette users, never users had 19% to 81% significantly lower concentrations of biomarkers of exposure to nicotine, TSNAs, some metals (eg, cadmium and lead), and some VOCs (including acrylonitrile)
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Smokers lose up to 22 minutes of life with a single cigarette, new predictions by experts warn The sooner smokers get off this escalator of death, the longer and healthier they can expect their lives to be, new study says Bookmark CommentsGo to comments Women lose 22 minutes of their life with each cigarette they smoke while one shortens a mans life by 17 minutes, experts have estimated
La cigarette lectronique est aujourdhui la meilleure alternative au tabac