A new study reveals that teenagers who sleep up to two extra hours on weekends report fewer anxiety symptoms. Researchers analyzed data from nearly 1,900 participants across the United States to better understand the connection between sleep habits and mental health. The findings were presented at the SLEEP 2025 conference in Seattle, Washington, on June 11.
Key points from the study include:
- Data came from the Adolescent Brain Cognitive Development Study.
- Nearly 1,900 teens aged 12 to 15 were observed.
- Participants wore Fitbit devices to track sleep.
- Anxiety and depression were assessed through questionnaires.
Table of contents:
- Sojeong Kim and the University of Oregon research
- Christopher Depner and observational study limits
- Social jet lag and possible mechanisms
- Sleep conference presentation and future research
Sojeong Kim and the University of Oregon research
Graduate student Sojeong Kim from the University of Oregon examined how weekend catch-up sleep affects anxiety in teenagers. She noted that ages 12 to 15 mark the period when falling asleep early becomes difficult. School schedules and circadian rhythms make it harder for teens to get the recommended 8 to 10 hours of rest.
Kim studied sleep and activity records collected through Fitbits, combined with self-reported mental health data. Her analysis showed that teens who added less than two hours of weekend sleep had the lowest anxiety levels. Those who either skipped extra rest or overslept by more than two hours showed higher symptoms.
Christopher Depner and observational study limits
Christopher Depner from the University of Utah, who was not part of the project, emphasized that this was an observational study. Such studies can detect associations but do not prove cause and effect. He suggested that controlled experiments with different sleep schedules could help confirm the findings.
Depner explained that participants were only observed in their natural habits. No interventions or assigned sleep patterns were introduced. This means researchers could not determine whether weekend sleep changes directly caused anxiety shifts.
Social jet lag and possible mechanisms
Kim pointed out that larger differences between weekday and weekend sleep can trigger social jet lag. This phenomenon, similar to jet lag from air travel, occurs when sleep schedules shift too much. It often leads to grogginess and reduced focus. She suspects that oversleeping by more than two hours may worsen anxiety through this mechanism, although her study did not directly test it.
Interestingly, the research did not reveal a strong link between weekend sleep and depression symptoms. Kim suggested this might be due to the age range, as depression typically appears later in adolescence, while anxiety often begins earlier.
Sleep conference presentation and future research
At the SLEEP 2025 conference, Kim shared that her next step is to expand the research to older teenagers. She concluded that modest weekend catch-up sleep may ease anxiety, but exceeding two hours could have the opposite effect.
Her findings provide valuable insight for parents, educators and health professionals who support adolescent well-being.
Quelle: ScienceNewsExplores, YouTube