While the long-term health impacts of vaping are not yet known, public health experts warn that exposure to nicotine, the same addictive substance found in regular cigarettes, may affect brain development in teens
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However, binary ROSs must be divided by 2 to make them comparable with continuous ROSs, which were calculated by averaging the risk over the range between the 15th and the 85th percentiles of observed exposure levels
Cigarettes, smokeless tobacco, and electronic nicotine delivery systems (ENDS)
Lors de son introduction en Espagne par les conquistadors au XVI e sicle, la consommation de tabac se diffusa en Europe o il tait pris, mastiqu (tabac mcher et chiquer), fum la pipe (pratique typique chez les marins et les militaires) ou au cigare dont la feuille de mas devint la norme sur le continent europen, avant d'tre remplace par du papier fin partir du XVII e sicle [52]