Smoking, vaping called a deadly combination for lung cancer risk UPI.com The Side Effects and Cancer Risk Associated with Vaping E cigarette vapor linked to cancer in mice National Institutes of Health (NIH) Smoking has long been known as a major cause of lung cancer, but now, even vapes and e cigarettes are contributing to the risk. This World Lung Day, let's raise awareness and make Researchers now warn that nicotine based e cigarettes are likely carcinogenic, meaning they have the potential to cause cancer, specifically in the lungs and mouth. Learn more in our weekly news roundup. https: t.co i4xGiCxD0t