now. this is what researchers are looking to, whether or not social media can become an addiction so to speak, if it does, maybe it has implications going forward. >> kids know there's a problem but a lot of the conditions, you can always pull yourself out of it, kids are probably the least equipped to do that, making it so difficult for them and their families to handle. i can't wait to watch this full hour on sunday night. you can tune into a whole new episode of the whole story with anderson cooper, one whole story in one hour, sunday 8 pm eastern time and pacific, only here on cnn, thank you for joining us. coming up next, donald trump get stumped at a campaign trail stop in iowa, see what happens when we come back. 's designed to target and remove them and helps prevent asthma attacks. fasenra is not for sudden breathing problems or other eosinophilic conditions.