South Korea's youth face a mental health crisis fueled by smartphones and sleep loss

A recent study has revealed concerning trends among South Korean adolescents, with mental health struggles and smartphone overuse on the rise. Nearly half of middle and high school students reported frequent distress, while depression rates also climbed. Researchers have flagged sleep deprivation and harmful online habits as key issues affecting young people today. The data shows that 41.3 percent of middle and high schoolers experience regular emotional distress. Depression affected 25.7 percent of students in the past year alone. Sleep patterns have also worsened, with children aged 9 to 18 averaging just 7 hours and 24 minutes of sleep on weekdays.

Self-harm remains the leading cause of death among Korean youths, a trend that has persisted since 2011. Meanwhile, smartphone addiction poses a growing threat, particularly for younger students. Among middle schoolers, 47.6 percent are now considered at risk, compared to 43 percent across all adolescents aged 10 to 19.

Online activity has surged, with teens spending an average of 27.3 hours per week on the internet—up from 20 hours the previous year. Instant messaging platforms dominate their usage, though exposure to adult content has declined. In 2024, 26.5 percent of students reported viewing such material, down from 47.5 percent two years earlier. The findings highlight a worsening mental health crisis among Korean adolescents, linked to excessive screen time and poor sleep. With nearly half of middle schoolers at risk of smartphone addiction, experts warn of long-term consequences. Schools and policymakers are now under pressure to address these growing challenges.