Does video games cause mental health problems?

There might be trouble brewing behind the glassy eyes of kids who spend much time and energy on video games , according to a controversial new study.
In the 2nd year of more than 3,000 school children in Singapore, researchers found nearly one in ten were video game "addicts", and most were stuck with the problem.
While these kids were more likely to have behavioural problems , excessive gaming appeared to cause additional mental woes.
"When the children became addicted , their depression , anxiety, and social phobias got worse, and their grades dropped," said Douglas A. Gentile , who runs the Media Research Lab at Iowa State University in Ames and worked on the study."When they stopped being addicted , their depression , anxiety,and social phobias got better."
He said neither parents nor healthcare providers are paying attention to video games' effect on mental health.But an independent expert said the study had key flaws.
"My own research has shown that excessive video game play is not necessarily addictive play and that many video gamers can play for long periods without there being any negative detrimental effects,"said Mark Griffiths , director of the International Gaming Research Unit at Nottinggham Trent University in the UK.

"If 9% of children were genuinely addicted to video games there would be video games addiction clinics in every major city!" he said in an email, adding that the concept in not currently an accepted diagnosis among psychiatrists and psychologists.
Part of the problem , Griffiths argued , is that the new work may be measuring preoccupation instead of addictin.

Does video games cause mental health problems?