Vaping releases toxic chemicals, including heavy metals, as well as ultrafine particles that go deep into the lungs. These increase the risk of heart and lung disorders. Health Effects of Vaping E Cigarettes and Vaping OHSU 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. HealthMatch Vaping may be safer than cigarettes, but it's not safe