E Cigarettes: Know the Health Risks Department of Health 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. Nicotine is especially addictive for young people and can make it harder to learn and focus. Nicotine withdrawal can worsen stress and mental health symptoms. Learn more about the risks of vaping Can vaping damage your lungs? What we do (and don't) know Harvard Health Vaping MYAN