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A Systematic Review Assessing Bidirectionality between Sleep Disturbances, Anxiety, and Depression
Pasquale K Alvaro1, Rachel M Roberts, Jodie K Harris
1School of Psychology, University of Adelaide, South Australia.
Sleep
|July 2, 2013
Summary
This review suggests insomnia is bidirectionally linked to anxiety and depression. Childhood sleep issues predict depression, but the reverse isn't proven, highlighting sleep's role in mental health.
Area of Science:
- Psychiatry and Sleep Medicine
- Mental Health Research
- Epidemiology
Background:
- Sleep disturbances are common and may influence mental health.
- Understanding the relationship between sleep and mental health is crucial for identifying risk factors.
- Bidirectional links between sleep problems and mood disorders require further investigation.
Purpose of the Study:
- To systematically review existing literature on the bidirectional relationship between sleep disturbances and anxiety/depression.
- To identify potential risk factors for sleep disturbances, anxiety, and depression.
- To synthesize evidence on the directionality of these associations.
Main Methods:
- Systematic review of 9 studies (8 longitudinal, 1 retrospective).
- Searched PubMed, PsychINFO, Embase, and Scopus databases up to December 2011.
- Excluded treatment studies and those solely on clinical or high-risk samples.
Main Results:
- Insomnia and sleep quality showed bidirectional relationships with anxiety and depression.
- Childhood sleep problems predicted higher depression levels, but not vice versa.
- Anxiety predicted excessive daytime sleepiness; the reverse association was not found.
Conclusions:
- Evidence suggests insomnia is bidirectionally related to anxiety and depression.
- Definitive conclusions for most sleep disturbances are limited by sample size and heterogeneity.
- Further research with robust cohort samples is needed to confirm bidirectionality for various sleep issues.
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