The effect of e cigarettes on smoking cessation and cigarette smoking initiation: An evidence based rapid review and meta analysis The impact of e cigarette exposure on different organ systems: A review of recent evidence and future perspectives ScienceDirect Dr. David Nutt of Imperial College London said that scientific evidence clearly shows e cigarettes and other less harmful alternatives are much safer than smoking and can support smoking cessation. Read the Juul disregarded evidence it's e cigarettes were getting teens hooked The Jerusalem Post