E Cigarettes Increase Risk of Lung and Bladder Cancer More Than Traditional Cigarettes Oncology Nursing Society The rise of teen vaping is worrying doctors worldwide. While e cigarettes were once marketed as a safer alternative, research shows they contain nicotine, heavy metals, and cancer causing chemicals that can damage developing Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC Irish Cancer Society position on e cigarettes Irish Cancer Supporting Tobacco Cessation on World Lung Cancer Dayand Beyond American Association for Cancer Research (AACR) Can Vaping Cause Lung Cancer? Here's What We Know.