Juul boosted: Study establishes e cigarettes as effective smoking cessation tool Vapes might be less harmful than traditional cigarettes and might help smokers quit smoking, but they are not safe, especially for individuals younger than 25 years old. Plus, much is still unknown E cigarettes could help smokers quit: Study E cigarettes could help smokers quit: Study Vaping: It's hard to quit, but help is available Harvard Health Vaping is not replacing smoking. It is often added to it. This is called dual use. Nearly half of e cigarette users still smoke cigarettes. What this means: Smoking continues alongside vaping