Harvard psychiatrist suggests reasons for over sharing on social media sites

NBC NATIONAL NEWS — If you have a friend who just won't get off of Facebook, there may be a scientific reason.

Peoples' tendency to over share got Harvard Researchers thinking about why people love to talk about themselves.

In a series of studies they found, brain activity was the same when people talk about themselves as when they encounter other triggers for pleasure, such as money or food.

One psychiatrist says we all want to be validated, but a status update isn't a substitute for a friend or a therapist.

Dr. Omar Rieche states, "We human beings, we can be callous. We can be selfish. In some ways, you get a false sense of privacy. You're sitting in your own home with the computer."

Rieche suggests limiting what you share online to life-changing, positive events.