Clinical Oncology Society of Australia concludes E cigarettes are likely to cause lung cancer and oral cancer Stanton Glantz blog E cigarettes safer than smoking says long term study UCL News UCL University College London The study, published in Cancer Research, studied DNA from more than 3,500 people. Governments around the world must take decisive action to crack down on e cigarettes and ban flavored vapes, the World Health Organization said Thursday, warning they must be treated in line with other Misconceptions about e cigarette safety might be stopping smokers using them to quit