The impact of e cigarette exposure on different organ systems: A review of recent evidence and future perspectives ScienceDirect Most e cigarettes contain nicotine, which is highly addictive. Putting maximum limits on the nicotine strength of e cigarettes, along with evidence based tobacco control strategies, may help reduce youth e cigarette use and increase quitting Public Health Consequences of E Cigarettes No scientific evidence that E Cigarettes are less harmful: Health Experts, ETHealthworld