Genetics and family factors may drive teen screen-depression link

Recent research suggests that the link between heavy screen use and teen mental health issues, such as depression and anxiety, may be driven more by genetics and family environment than by digital devices alone.

A large-scale study published in Nature Human Behaviour followed nearly 22,000 Swedish twins from age 9 into their mid-20s. While teenagers who engaged in more than six hours of interactive screen use—such as gaming or chatting—at age 15 showed a higher rate of later clinical diagnoses, much of this correlation diminished when researchers compared twins. Because twins share genetic material and household environments, the study suggests that shared family factors and biology play a significant role in mental health outcomes.

Psychologists, including Candice Odgers, have noted that the intense public focus on social media as a primary cause of mental health deterioration may lead to overlooking other critical contributing factors. While interactive digital activities show stronger ties to mental health symptoms than passive activities like watching television, experts caution that the current discourse may be oversimplifying a complex issue by focusing heavily on the 'scary stories' of social media addiction.