E Cigarettes Promote Macrophage Tumor Cells Crosstalk: Focus on Breast Carcinoma Progression and Lung Metastasis Pilot Study Shows Even Short Term 'Vaping' Causes Inflammation in Non Smokers Juul boosted: Study establishes e cigarettes as effective smoking cessation tool Vapers Show Chemical Changes in Their DNA That Are Linked to Cancer Latest Cochrane Review finds high certainty evidence that nicotine e cigarettes are more effective than traditional nicotine replacement therapy (NRT) in helping people quit smoking Cochrane