Scientific review finds e cigarettes likely cause lung and oral cancer 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 E cigarettes are not a healthier alternative to cigarettes. They contain nicotine and many harmful ingredients that can cause cancer and heart disease. Since these products are relatively new, we don't know all Do you know what you're vaping? Cancer Institute NSW