"The addiction to video games is one of the newest addictions known to medicine. WHO estimates that 3 to 4 percent of gamers world wide are addicted. That means 77 million people are addicted to video games around the world. At least 5 million are addicted in the United States. Video game addiction is so new that scientists have only begun to look into its causes and its impact on brain functioning, physical health, and social functioning. More research is underway"-- Provided by publisher.