E cigarettes Found to Cause Change in Mouth Bacteria Which Could Lead to Gum Disease or Oral Cancer Respiratory Therapy Can vaping cause cancer? The evidence suggests it might. 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 Countries That Ban the Sale of Vapes, E Cigarettes Best Countries U.S. News Beware! E cigarettes may lead to cancer Vietnam bans vapes, will fine tourists up to US$78 and jail e cigarette traders, producers South China Morning Post