Health Effects of Vaping Smoking and Tobacco Use CDC Vaping has become common, but it's important to know what you're inhaling. Many e cigarettes contain nicotine, heavy metals like nickel and lead, and chemicals that can harm your lungs and overall health. Global youth vaping and respiratory health: epidemiology, interventions, and policies npj Primary Care Respiratory Medicine Electronic Cigarette Use and Risk of Hypertension: The Hispanic Community Health Study Study of Latinos (HCHS SOL) ScienceDirect