Can vaping cause cancer? Risks and more Scientists Warn: Vaping Likely Causes Cancer Many students believe that vaping harmless, which is far from the truth. Vape pens can contain potentially harmful substances such as chemicals linked to lung disease, cancer causing chemicals, heavy metals such as Can vaping cause cancer? The evidence suggests it might. The Washington Post The research looked at the chemical composition of "vape smoke" and assessed its cancer risk using data from published animal studies. Read more Vaping Leads Lung Disease Cancer Lungs : image vectorielle de stock (libre de droits) 2588641363 Shutterstock