# Genetics and family influence on teen screen time > Live situation record from CLSTR: https://clstr.news/situations/genetics-and-family-influence-on-teen-screen-time > Updated: 2026-10-11T03:59:54.000Z. Sources: 6. Developments: 2. Research involving nearly 22,000 Swedish twins suggests that the correlation between heavy screen use and mental health issues, such as depression and anxiety, may be driven significantly by genetics and shared family environments rather than digital devices alone. The study, published in Nature Human Behaviour, observed participants from age 9 into their mid-20s. While teenagers using interactive screens—such as gaming or chatting—for more than six hours daily at age 15 showed higher rates of later clinical diagnoses, the correlation diminished when comparing twins within the same household. This indicates that shared biological and household factors play a major role in mental health outcomes. Experts note that interactive digital activities show stronger ties to mental health symptoms than passive activities like watching television. Psychologists caution that the intense public focus on social media as a primary cause of mental health deterioration may lead to overlooking other critical contributing factors, potentially oversimplifying a complex issue by focusing on “scary stories” of social media addiction. ## Timeline ### 2026-10-11: Genetics and family factors may drive teen screen-depression link A study of 22,000 Swedish twins suggests that genetics and family environment, rather than screen time alone, may be primary drivers of the link between adolescent screen use and depression or anxiety. 3 sources. https://clstr.news/cluster/genetics-and-family-factors-may-drive-teen-screen-depression-link ### 2026-10-08: Twin study suggests genetics and family life influence screen time and mental health links A major twin study suggests the link between heavy screen time and youth mental health issues may be driven by genetics and family environment rather than screens alone. 4 sources. https://clstr.news/cluster/karolinska-institutet-study-links-screen-time-and-mental-health-to-family-factors --- Cite as: Genetics and family influence on teen screen time. CLSTR, https://clstr.news/situations/genetics-and-family-influence-on-teen-screen-time