How Can Smoking and Vaping Impact Cancer? Urology Care Foundation E Cigarettes and Breast Cancer: Is Vaping Really Safer? Vaping, Environmental Toxicants Exposure, and Lung Cancer Risk Most E cigarette Users Ages 18 to 29 Never Smoked Before American Cancer Society E Cigarettes Promote Macrophage Tumor Cells Crosstalk: Focus on Breast Carcinoma Progression and Lung Metastasis New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking