Vapes and e cigarettes often contain nicotine, heavy metals, and carcinogensand can harm developing brains, affect mood and learning, and lead to lasting lung damage. Just one hit can start an addiction. E Cigarettes Increase Risk of Lung and Bladder Cancer More Than Traditional Cigarettes Oncology Nursing Society Vaping harms your health Cancer Institute NSW Teen Vaping: Health Risks and What Parents Should Know Cedars Sinai