really at the health consequences. for that i want to bring in news medical correspondent doctor john torres. i was looking at an mpr report on this. eight teenagers were actually hospitalized in wisconsin just last month with seriously -- it said damaged lungs. they said they had been vaping in the weeks leading up to their hospitalization. what are the potential health hazards to vaping and to using things like juul? >> and that's one of the big issues. we don't know what they all will be, especially short time, meaning that the kids and the teenagers and the adolescents are using it. and what do we know when people are in the long term, but 40, 50 years down the road they start having lung cancers. we don't know about ecigarettes because a lot of times the research hasn't been done yet, and it's just now starting to come up.