Vaping offers smokers an alternative which is significantly less harmful than smoking, as emphasized by regulators such as Public Health England, the Royal College of Physicians, the German Federal Office for Drugs, the French Economic, Social and Environmental Council (CESE) and RIVM.

Public Health England concluded, following a landmark review of the available evidence, that e-cigarettes represent at least 95% harm reduction versus conventional cigarettes. Smokers are also being encouraged to switch to e-cigarettes by lawmakers in Canada and New Zealand. In 2016, the UK Royal College of Physicians reported that ‘the hazard to health arising from long-term vapour inhalation from e-cigarettes is unlikely to exceed 5% of the harm from smoking tobacco.