Soneji and colleagues conducted a thorough systematic analysis, which revealed that adolescents and young adults who had previously used e-cigarettes were 3.50 times more likely to initiate cigarette smoking in comparison to individuals who had never used e-cigarettes ( Consistent with prior findings, we observed that curiosity about the novelty of electronic cigarettes, the belief that they are less harmful than traditional cigarettes, and the better taste due to various flavors were the main reasons young people started using them ( E-cigarette liquids and aerosols contain numerous harmful chemical substances and potential carcinogens such as tobacco-specific nitrosamines, metals (nickel, tin, lead), volatile organic compounds, reactive carbonyls (acetaldehyde, formaldehyde), propylene glycol, glycerol, polycyclic aromatic hydrocarbons, in addition to nicotine and flavoring additives ( Nicotine is a highly addictive psychoactive chemical that causes tobacco dependence

(verified owner) Verified review - view original Perfect for me
They come off machine feeling like they are too loose but get firm after a few minutes when tobacco releives some compression in cigarette tube to a nice firm smoke
J Chromatogr A 1280:122127