The effect of e cigarettes on smoking cessation and cigarette smoking initiation: An evidence based rapid review and meta analysis Cochrane Library: Vaping Helps Quit Smoking E cigarettes can help people quit smoking but more evidence needed on long term harms, review concludes Our new report 'E cigarettes and harm reduction: An evidence review 2024' examines the role that e cigarettes play in preventing death, disability and inequalities from tobacco use. The report explores how e cigarettes can