Associations between overuse of the internet and mental health in adolescents.

This study examined the factors influencing internet addiction levels and mental health in a nationally-representative sample of 74,980 Korean middle- and high-school students who completed the 2010 Korea Youth Risk Behavior Web-Based Survey. The prevalence rates of potential internet addiction and internet addiction were 14.8% and 3%, respectively. The odds ratios for potential internet addiction were higher in both boys and girls who reported suicidal ideation, depressive mood, moderate or higher subjective stress, moderate or more happiness, or ever having engaged in problematic substance use. Adolescents at high risk for internet addiction had poor mental health outcomes. The findings indicate the need for measures to prevent and manage internet addiction in adolescents that consider the severity of factors related to internet addiction.