Vaping may raise cancer risk because of damage to DNA, says study South China Morning Post Let's talk vaping. Smokeless doesn't mean harmless. Most e cigarettes contain nicotine which is highly addictive and can harm adolescent brain development, which continues into the early mid 20's. Some e cigarettes can even Try smokeless nicotine cigarettes, says government Smoking The Guardian Vapoteurs : mobilisez vous ! Une tude va valuer l'efficacit de la cigarette lectronique pour arrter de fumer Allo Docteurs Dangers of Smokeless Tobacco Dimensions of Dental Hygiene