It's more likely than not the other way around (depression causes Facebook use). Clinical depression starts from within, and is usually independent of one's ci

It's more likely than not the other way around (depression causes Facebook use). Clinical depression starts from within, and is usually independent of one's circumstances (wealthy people with good families are often depressed too). Depressed people have a need to rationalize their feelings. "My life isn't as good as others" is a common rationalization for depression, and a service that lets them view the highlight reels of a billion other people whose lives appear to be better than theirs is the ultimate tool for it.