Too much exposure to social networks like Facebook and Twitter can lead to decline in concentration span and the inability to make eye contact during conversations, leaving users with an “identity crisis”, an expert has warned.

Baroness Greenfield, professor of pharmacology at Oxford University, claimed that excessive use of social networks and online video games had developed crave for attention online, which could effectively rewire the brain.

Craving for social networking can be estimated from the fact that Facebook has more than 750 million users worldwide, who regularly make use of the platform to share photographs and videos of important s well as trivial happening in their lives. Millions have also signed up to other social networks like Twitter.

Commenting on the topic, Greenfield said, “What concerns me is the banality of so much that goes out on Twitter. Why should someone be interested in what someone else has had for breakfast?”

According to Greenfield, it is almost as if users are in some sort of identity crisis.

Earlier, literacy expert & author Sue Palmer said girls in particular consider themselves as a commodity they must sell to other users on Facebook. She added that people tried to design their portraits online.