Answer: It isolates them from real people.
Explanation: According to a recent study, teens that use social media are three times as likely to feel socially isolated.
When you spend enough time on social media, you just look at a screen looking at other peoples lives. This will make you feel lonely and isolated because you are not getting peer interaction in real life.
You should spend more time out with your friends, and less time being absorbed into the world of social media.