The Side Effects and Cancer Risk Associated with Vaping PET imaging shows greater lung inflammation in e cigarette users than cigarette smokers 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 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