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Twins Study Reassesses Screen Time and Teen Depression
A study on twins suggests that the relationship between increased screen time and the deterioration of adolescents' mental health is not straightforward. Genetic factors and family circumstances explain a large part of this correlation. In a longitudinal study of about 21,000 Swedish twins from age nine to their twenties, it was found that the rise in depression and anxiety symptoms with increased screen use significantly diminishes when comparing twins who grew up in the same environment and shared genetic factors. However, heavy screen use remains slightly associated with higher symptoms, especially when measured among identical twins at age 18, where the twin who spends more time in front of screens during weekends shows noticeably higher symptoms. These findings emphasize that genetic and family influences play a major role in teenagers' mental health, and the link between screen time and psychological symptoms is not primarily causal. Nonetheless, intensive interactive use still slightly indicates an increase in mental health disorders.
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