Former smokers who vape now still need to be screened for lung cancer. Many of them aren't E cigarette vapor linked to cancer in mice National Institutes of Health (NIH) E cigarettes cause lung cancer in mice, finds first study tying vaping to cancer E Cigarettes Promote Macrophage Tumor Cells Crosstalk: Focus on Breast Carcinoma Progression and Lung Metastasis NEW STUDY ON VAPING AND IT'S SERIOUS If you know someone who vapes, send this to them A major scientific review analyzing over 100 studies has found that nicotine based e cigarettes E cigarette smoke caused lung cancer in mice ecancer