What Does A JUUL Really Do To Your Body? Franciscan Health JUUL Is Unsafe. We Want You to Know Why. Juul Suspends Selling Most E Cigarette Flavors in Stores The New York Times 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. What Are JUULpods? Discover Our Pods' Ingredients And Flavors JUUL Teens Are 'Juuling' At School. Here's What That Means