Understanding Vaping and Lung Cancer: Risks and Insights The research looked at the chemical composition of "vape smoke" and assessed its cancer risk using data from published animal studies. Read more 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 A scientific review has raised fresh concerns about the long term cancer risks of vaping, concluding that e cigarettes are probably carcinogenic, while also acknowledging significant gaps in the evidence. The analysis of reviews