Health Effects Vaping Information, Solutions & Interventions Toolkit Stanford Medicine New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking Vaping is NOT Harmless. Know the long term effects before it's too late! Most e cigarette liquids contain high levels of nicotine, which is highly addictive. Despite the legal age being 21, vaping devices HealthMatch Vaping may be safer than cigarettes, but it's not safe