The House of Commons Science and Technology Select Committee have launched an inquiry into e-cigarette impact, implications, and regulation.1 National guidance for improving health should be evidence based, with a complete understanding of what is disseminated and encouraged. However, despite substantial gaps in research, e-cigarettes are promoted as part of smoking cessation efforts, including in the Public Health England (PHE) campaign, One You. Should the suggestion of e-cigarettes as a lesser evil be promoted when evidence of their long-term effect is insufficient
