It's official. Flavored e cigarettes cause permanent lung damage. And doctors are already seeing it happen. In the United States, a teenager developed something called popcorn lung after secretly vaping for three years. Imaging Findings of Vaping Associated Lung Injury AJR Daily 'The doctors said he could have died' Read more: https: trib.al JZUNYLc Facebook The northeastern Oklahoma teen had been vaping for six years. Her lungs were covered in blisters. Her left lung collapsed. She was put in a paralytic coma and placed on a ventilator.