E cigarettes accelerate lung colonization of breast cancer cells. A. Download Scientific Diagram Vaping likely to cause cancer: Australian study Vaping may not contain tobacco, but that doesn't mean it's harmless. E cigarettes still expose your lungs to nicotine and a mix of chemicals that have been linked to lung disease, heart issues, Can vaping cause cancer? The evidence suggests it might. The Washington Post Health Issues What's the Harm? Texas DSHS