More cancer causing chemicals found in electronic cigarettes The Verge Research shows vaping is far less harmful than smoking E cigarettes are likely to cause cancer, including in the lungs and mouth, according to a sweeping review of scientific evidence that challenges their positioning as a safer alternative to smoking. There is Does Vaping Increase the Risk of Lung Cancer? Recent studies suggest that while vaping may seem safer than smoking, it still carries risks! Vaping can expose your