E cigarettes Cancer Council NSW Tobacco Smoke, Vaping, and Asthma AAFA.org In recent years, the number of e cigarette users worldwide has sharply increased, with many believing that vaping is less harmful than smoking traditional cigarettes. However, health experts are warning of its negative Vaping likely to cause cancer: New research warns A major review led by researchers at UNSW Sydney says nicotine vaping may be linked to both lung cancer and oral