Smoking, vaping called a deadly combination for lung cancer risk UPI.com How E Cigarettes Affect Your Body 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 Switching to E Cigarettes Did not Prevent His Lung Cancer Death E cigarettes are likely to cause lung cancer and oral cancer Preclinical study suggests 'e cigarettes' may promote lung cancer in high risk individuals ecancer