Social Jet Lag May Be Linked to Teen Anxiety

When the Body Clock Conflicts With Social Demands

Adolescence is accompanied by a biological shift toward a later sleep pattern. Teenagers naturally tend to become more “evening-oriented”, while school schedules often require them to wake early. The resulting difference between weekday and weekend sleep timing is known as social jet lag.

Researchers from the University of Southampton reviewed evidence on whether this mismatch is associated with anxiety in adolescents aged 12 to 18. Their meta-analysis included 12 studies involving more than 235,000 participants and found a small but statistically significant association between greater social jet lag and more severe anxiety.

From a psychological perspective, the finding can be interpreted through the biopsychosocial model. Anxiety is not viewed simply as an individual psychological problem; biological processes, behaviour and the social environment can interact. In this case, an adolescent's circadian development may conflict with institutional demands such as early school start times.

The study therefore challenges an exclusively individual explanation of adolescent anxiety. Telling young people simply to “sleep better” may overlook the structural conditions influencing their sleep patterns.

The researchers emphasise that the relationship is bidirectional and correlational, meaning that anxiety may also contribute to irregular sleep. Therefore, the findings should not be interpreted as evidence that social jet lag directly causes anxiety.

The research nevertheless raises an important theoretical question for psychology: to what extent is mental health shaped by the interaction between biological development and social institutions?

Rather than treating adolescent anxiety exclusively as an internal psychological condition, the findings support a broader contextual approach in which sleep, developmental biology, education systems and everyday behaviour are considered together.