Broad evidence implicates e cigarettes as a cause of cancer Stanton Glantz blog E Cigarettes Promote Macrophage Tumor Cells Crosstalk: Focus on Breast Carcinoma Progression and Lung Metastasis 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 Graphical review: The redox dark side of e cigarettes; exposure to oxidants and public health concerns ScienceDirect The research looked at the chemical composition of "vape smoke" and assessed its cancer risk using data from published animal studies. Read more