E Cigarette Vapor Linked to Lung Cancer in Mice A comprehensive review of recent peer reviewed research provides the strongest evidence to date that using electronic cigarettes likely causes both oral and lung cancers in humans. https: modernsciences.org vaping likely causes oral lung cancer april E Cigarettes and Associated Health Risks: An Update on Cancer Potential E cigarette vapor linked to cancer in mice National Institutes of Health (NIH) Research is still evolving, but evidence continues to point to a link between smoking and breast cancer risk. From firsthand and secondhand smoke to vaping and cannabis, here's what scientists knowand what