If you vape, you inhale a lot of harmful substances. These can damage your heart and lungs. Nicotine absorption from electronic cigarette use: comparison between first and new generation devices Scientific Reports Vaping & Cancer: Does Vaping Cause Lung Cancer? SERO Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center What Happens if You Swallow Vape Juice? EDGE Vaping