Playing computer games and using Facebook are extremely dangerous for kids as overuse of technology may lead to temporary 'dementia'.

She claimed that in a single year, children can spend up to 2,000 hours staring at a screen, as a consequence of which they can suffer from risks like computer addiction.
Despite technology being loaded with numerous benefits like harnessing creativity, Greenfield insisted that overuse is definitely dangerous.
"Screen technologies cause high arousal which in turn activates the brain systems underlying addiction. This results in the attraction of yet more screen-based activity," the Sun quoted her as saying at a conference in Dorset.
She also stressed on the fact that connections in the brain "can be temporarily disabled by activities with a strong sensory content - 'blowing the mind'.
"Or they can be inactivated permanently by degeneration - ie. dementia."
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Greenfield also spoke about the inclination of youngsters to live their lives through Facebook and the rise in "trolling"- where malicious messages are posted online.
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Source-ANI