Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA American Cancer Society urges Michigan to regulate e cigarettes, vaping like tobacco E cigarettes Found to Cause Change in Mouth Bacteria Which Could Lead to Gum Disease or Oral Cancer Respiratory Therapy Teens inhale cancer causing chemicals in e cigarettes Vaping can cause cancer, say researchers but still isn't as damaging as smoking cigarettes. More than 5.5 million Britons currently use e cigarettes, which have long been viewed as a safer alternative E cigarette users had substances linked to bladder cancer in urine, review finds