E cigarettes are likely to cause cancer, including in the lungs and mouth, according to a sweeping review of scientific evidence that challenges their positioning as a safer alternative to smoking. There is New research shows e cigarette use up sharply among younger adults in US during EVALI outbreak and COVID 19 pandemic E Cigarette Research, Studies & Reports (Updated 2019) Public Health Consequences of E Cigarettes Research shows vaping is far less harmful than smoking