Great article on the link between mental health issues and the use of social media in young people, although overuse of social media can cause problems in adults just as well.
Social media is a great toolset for mass communication, sharing of ideas, for learning and in general making the world a smaller place. Social media can be used to obtain real information about issues, cultures, geographies; anything that one wants to learn about. All if used properly.
However, it can become easy to blur the lines of social media and reality; not only for impressionable young people, but for everyone.
Try being more self-aware when it comes to interacting with others.
Limit your online environment in favor of in-person interactions, and see how you feel about each.