Sleep disorders and their impact on the mental health of public health professionals
Main role of social workers
Keywords:
Sleep disorders, mental health, public health professionals, social workers, schizophrenia, depression, PTSD, insomnia, hypersomnia, nightmaresAbstract
Aim: This review aims to explore the impact of sleep disorders on the mental health of public health professionals, with a particular focus on the role of social workers. Methods: The review synthesizes findings from various empirical studies, longitudinal research, and intervention trials to examine the relationship between sleep disturbances and mental health issues. It focuses on the three most studied mental health conditions related to sleep disorders: schizophrenia, depression, and post-traumatic stress disorder (PTSD). Results: The findings indicate that sleep disturbances are prevalent across various mental health conditions and may serve as a significant contributing factor rather than merely a symptom. In schizophrenia, sleep issues often precede and exacerbate psychotic episodes. In depression, insomnia and hypersomnia are common, with insomnia significantly increasing the risk of developing depression. In PTSD, sleep disturbances, including insomnia and nightmares, are integral to the disorder and contribute to its persistence. Conclusion: Sleep disturbances play a crucial role in the onset and progression of mental health issues. Addressing sleep problems through targeted interventions can significantly alleviate symptoms of schizophrenia, depression, and PTSD. Social workers are vital in identifying and addressing sleep issues among public health professionals, potentially improving mental health outcomes in this population.
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References
Dickens C. Lying awake. Household Words, Oct 30, 1852: 6.
Wordsworth W. Poems, vol 2. London: Longman, 1815.
Labé L. Sonnets. Martin GD. Edinburgh Bilingual Library. Edinburgh: Edinburgh University Press, 1972.
Babson KA, Trainor CD, Feldner MT, Blumenthal H. A test of the effects of acute sleep deprivation on general and specific self-reported anxiety and depressive symptoms: an experimental extension. J Behav Ther Exp Psychiatry 2010; 41: 297–303.
Schrimpf M, Liegl G, Boeckle M, Leitner A, Geisler P, Pieh C. The effect of sleep deprivation on pain perception in healthy subjects: a meta-analysis. Sleep Med 2015; 16: 1313–20.
Reeve S, Emsley R, Sheaves B, Freeman D. Disrupting sleep: the effects of sleep loss on psychotic experiences tested in an experimental study with mediation analysis. Schizophr Bull 2018; 44: 662–71.
Harvey AG. Insomnia: symptom or diagnosis? Clin Psychol Rev 2001; 21: 1037–59.
Krueger RF. The structure of common mental disorders. Arch Gen Psychiatry 1999; 56: 921–26.
de Jonge P, Wardenaar KJ, Lim CCW, et al. The cross-national structure of mental disorders: results from the World Mental Health Surveys. Psychol Med 2018; 48: 2073–84.
Borsboom D, Cramer AO. Network analysis: an integrative approach to the structure of psychopathology. Annu Rev Clin Psychol 2013; 9: 91–121.
Moffa G, Catone G, Kuipers J, et al. Using directed acyclic graphs in epidemiological research in psychosis: an analysis of the role of bullying in psychosis. Schizophr Bull 2017; 43: 1273–79.
Bird JC, Evans R, Waite F, Loe BS, Freeman D. Adolescent paranoia: prevalence, structure, and causal mechanisms. Schizophr Bull 2019; 45: 1134–42.
Kozak MJ, Cuthbert BN. The NIMH Research Domain Criteria initiative: background, issues, and pragmatics. Psychophysiology 2016; 53: 286–97.
McGinty D, Szymusiak R. Neural control of sleep in mammals. In: Kryger M, Roth T, Dement W, eds. Principles and practice of sleep medicine, 6th edn. Philadelphia: Elsevier, 2017: 62–77.
Klinzing JG, Niethard N, Born J. Mechanisms of systems memory consolidation during sleep. Nat Neurosci 2019; 22: 1598–610.
Walker MP, van der Helm E. Overnight therapy? The role of sleep in emotional brain processing. Psychol Bull 2009; 135: 731–48.
Xie L, Kang H, Xu Q, et al. Sleep drives metabolite clearance from the adult brain. Science 2013; 342: 373–77.
Talbot LS, McGlinchey EL, Kaplan KA, Dahl RE, Harvey AG. Sleep deprivation in adolescents and adults: changes in affect. Emotion 2010; 10: 831–41.
Palmer CA, Alfano CA. Sleep and emotion regulation: an organizing, integrative review. Sleep Med Rev 2017; 31: 6–16.
Tempesta D, Couyoumdjian A, Curcio G, et al. Lack of sleep affects the evaluation of emotional stimuli. Brain Res Bull 2010; 82: 104–08.
Drummond SP, Paulus MP, Tapert SF. Effects of two nights sleep deprivation and two nights recovery sleep on response inhibition. J Sleep Res 2006; 15: 261–65.
Lewis PA, Knoblich G, Poe G. How memory replay in sleep boosts creative problem-solving. Trends Cogn Sci 2018; 22: 491–503.
Zhu B, Shi C, Park CG, Zhao X, Reutrakul S. Effects of sleep restriction on metabolism-related parameters in healthy adults: a comprehensive review and meta-analysis of randomized controlled trials. Sleep Med Rev 2019; 45: 18–30.
Irwin M. Sleep and inflammation: partners in sickness and in health. Nat Rev Immunol 2019; 19: 702–15.
Sinha SS. Trauma-induced insomnia: a novel model for trauma and sleep research. Sleep Med Rev 2016; 25: 74–83.
Buysse DJ, Reynolds CF 3rd, Kupfer DJ, et al. Clinical diagnoses in 216 insomnia patients using the International Classification of Sleep Disorders (ICSD), DSM-IV and ICD-10 categories: a report from the APA/NIMH DSM-IV Field Trial. Sleep 1994; 17: 630–37.
Baglioni C, Nanovska S, Regen W, et al. Sleep and mental disorders: a meta-analysis of polysomnographic research. Psychol Bull 2016; 142: 969–90.
Riemann D, Berger M, Voderholzer U. Sleep and depression– results from psychobiological studies: an overview. Biol Psychol 2001; 57: 67–103.
Wulff K, Gatti S, Wettstein JG, Foster RG. Sleep and circadian rhythm disruption in psychiatric and neurodegenerative disease. Nat Rev Neurosci 2010; 11: 589–99.
Wilson S, Anderson K, Baldwin D, et al. British Association for Psychopharmacology consensus statement on evidence-based treatment of insomnia, parasomnias and circadian rhythm disorders: An update. J Psychopharmacol 2019; 33: 923–47.
Kendler KS, Campbell J. Interventionist causal models in psychiatry: repositioning the mind-body problem. Psychol Med 2009; 39: 881–87.
Dunn G, Emsley R, Liu H, et al. Evaluation and validation of social and psychological markers in randomised trials of complex interventions: a methodological research programme. Health Technol Assess 2015; 19: 1–115.
Freeman D, Pugh K, Vorontsova N, Southgate L. Insomnia and paranoia. Schizophr Res 2009; 108: 280–84.
Myers E, Startup H, Freeman D. Cognitive behavioural treatment of insomnia in individuals with persistent persecutory delusions: a pilot trial. J Behav Ther Exp Psychiatry 2011; 42: 330–36.
Wulff K, Dijk D-J, Middleton B, Foster RG, Joyce EM. Sleep and circadian rhythm disruption in schizophrenia. Br J Psychiatry 2012; 200: 308–16.
Foster RG, Peirson SN, Wulff K, Winnebeck E, Vetter C, Roenneberg T. Sleep and circadian rhythm disruption in social jetlag and mental illness. Prog Mol Biol Transl Sci 2013; 119: 325–46.
Waite F, Evans N, Myers E, et al. The patient experience of sleep problems and their treatment in the context of current delusions and hallucinations. Psychol Psychother 2016; 89: 181–93.
Rehman A, Waite F, Sheaves B, Biello S, Freeman D, Gumley A. Clinician perceptions of sleep problems, and their treatment, in patients with non-affective psychosis. Psychosis 2017; 9: 129–39.
Koyanagi A, Stickley A. The association between sleep problems and psychotic symptoms in the general population: a global perspective. Sleep (Basel) 2015; 38: 1875–85.
Taylor MJ, Gregory AM, Freeman D, Ronald A. Do sleep disturbances and psychotic-like experiences in adolescence share genetic and environmental influences? J Abnorm Psychol 2015; 124: 674–84.
Reed ZE, Jones HJ, Hemani G, Zammit S, Davis OSP. Schizophrenia liability shares common molecular genetic risk factors with sleep duration and nightmares in childhood. Wellcome Open Res 2019; 4: 15.
Freeman D, Stahl D, McManus S, et al. Insomnia, worry, anxiety and depression as predictors of the occurrence and persistence of paranoid thinking. Soc Psychiatry Psychiatr Epidemiol 2012; 47: 1195–203.
Sheaves B, Bebbington PE, Goodwin GM, et al. Insomnia and hallucinations in the general population: findings from the 2000 and 2007 British Psychiatric Morbidity surveys. Psychiatry Res 2016; 241: 141–46.
Reeve S, Nickless A, Sheaves B, Freeman D. Insomnia, negative affect, and psychotic experiences: Modelling pathways over time in a clinical observational study. Psychiatry Res 2018; 269: 673–80.
Kasanova Z, Hajdúk M, Thewissen V, Myin-Germeys I. Temporal associations between sleep quality and paranoia across the paranoia continuum: an experience sampling study. J Abnorm Psychol 2019; 129: 122–130.
Freeman D, Morrison A, Bird JC, et al. The weeks before 100 persecutory delusions: the presence of many potential contributory causal factors. BJPsych Open 2019; 5: e83.
Freeman D, Brugha T, Meltzer H, Jenkins R, Stahl D, Bebbington P. Persecutory ideation and insomnia: findings from the second British National Survey of Psychiatric Morbidity. J Psychiatr Res 2010; 44: 1021–26.
Hennig T, Lincoln TM. Sleeping paranoia away? An actigraphy and experience-sampling study with adolescents. Child Psychiatry Hum Dev 2018; 49: 63–72.
Freeman D, Taylor KM, Molodynski A, Waite F. Treatable clinical intervention targets for patients with schizophrenia. Schizophr Res 2019; 211: 44–50.
Reeve S, Sheaves B, Freeman D. Sleep disorders in early psychosis: incidence, severity, and association with clinical symptoms. Schizophr Bull 2019; 45: 287–95.
Lunsford-Avery JR, Gonçalves BDSB, Brietzke E, et al. Adolescents at clinical-high risk for psychosis: circadian rhythm disturbances predict worsened prognosis at 1-year follow-up. Schizophr Res 2017; 189: 37–42.
Wee ZY, Yong SWL, Chew QH, Guan C, Lee TS, Sim K. Actigraphy studies and clinical and biobehavioural correlates in schizophrenia: a systematic review. J Neural Transm (Vienna) 2019; 126: 531–58.
Chan MS, Chung KF, Yung KP, Yeung WF. Sleep in schizophrenia: a systematic review and meta-analysis of polysomnographic findings in case-control studies. Sleep Med Rev 2017; 32: 69–84.
Castelnovo A, Graziano B, Ferrarelli F, D’Agostino A. Sleep spindles and slow waves in schizophrenia and related disorders: main findings, challenges and future perspectives. Eur J Neurosci 2018; 48: 2738–58.
Freeman D, Sheaves B, Goodwin GM, et al. The effects of improving sleep on mental health (OASIS): a randomised controlled trial with mediation analysis. Lancet Psychiatry 2017; 4: 749–58.
Waite F, Myers E, Harvey AG, et al. Treating sleep problems in patients with schizophrenia. Behav Cogn Psychother 2016; 44: 273–87.
Sheaves B, Isham L, Bradley J, et al. Adapted CBT to stabilize sleep on psychiatric wards: a transdiagnostic treatment approach. Behav Cogn Psychother 2018; 46: 661–75.
Bradley J, Freeman D, Chadwick E, et al. Treating sleep problems in young people at ultra-high risk of psychosis: a feasibility case series. Behav Cogn Psychother 2018; 46: 276–91.
Waite F, Bradley J, Chadwick E, Reeve S, Bird JC, Freeman D. The experience of sleep problems and their treatment in young people at ultra-high risk of psychosis: a thematic analysis. Front Psychiatry 2018; 9: 375.
Sheaves B, Freeman D, Isham L, et al. Stabilising sleep for patients admitted at acute crisis to a psychiatric hospital (OWLS): an assessor-blind pilot randomised controlled trial. Psychol Med 2018; 48: 1694–704.
Freeman D, Waite F, Startup H, et al. Efficacy of cognitive behavioural therapy for sleep improvement in patients with persistent delusions and hallucinations (BEST): a prospective, assessor-blind, randomised controlled pilot trial. Lancet Psychiatry 2015; 2: 975–83.
Sheaves B, Holmes EA, Rek S, et al. Cognitive behavioural therapy for nightmares for patients with persecutory delusions (Nites): an assessor-blind, pilot randomized controlled trial. Can J Psychiatry 2019; 64: 686–96.
Li SX, Lam SP, Zhang J, et al. Sleep disturbances and suicide risk in an 8 year longitudinal study of schizophrenia-spectrum disorders. Sleep (Basel) 2016; 39: 1275–82.
Geoffroy PA, Hoertel N, Etain B, et al. Insomnia and hypersomnia in major depressive episode: prevalence, sociodemographic characteristics and psychiatric comorbidity in a population-based study. J Affect Disord 2018; 226: 132–41.
Palagini L, Baglioni C, Ciapparelli A, Gemignani A, Riemann D. REM sleep dysregulation in depression: state of the art. Sleep Med Rev 2013; 17: 377–90.
Arfken CL, Joseph A, Sandhu GR, Roehrs T, Douglass AB, Boutros NN. The status of sleep abnormalities as a diagnostic test for major depressive disorder. J Affect Disord 2014; 156: 36–45.
Hein M, Lanquart J-P, Loas G, Hubain P, Linkowski P. Similar polysomnographic pattern in primary insomnia and major depression with objective insomnia: a sign of common pathophysiology? BMC Psychiatry 2017; 17: 273.
Gehrman PR, Meltzer LJ, Moore M, et al. Heritability of insomnia symptoms in youth and their relationship to depression and anxiety. Sleep (Basel) 2011; 34: 1641–46.
Gregory AM, Rijsdijk FV, Eley TC, et al. A longitudinal twin and sibling study of associations between insomnia and depression symptoms in young adults. Sleep (Basel) 2016; 39: 1985–92.
Gress-Smith JL, Roubinov DS, Andreotti C, Compas BE, Luecken LJ. Prevalence, severity and risk factors for depressive symptoms and insomnia in college undergraduates. Stress Health 2015; 31: 63–70.
Minkel J, Krystal A, Benca R. Unipolar major depression. In: Kryger M, Roth T, Dement W, eds. Principles and practice of sleep medicine, 6th edn. Philadelphia: Elsevier, 2017: 1352–62.
Ford DE, Kamerow DB. Epidemiologic study of sleep disturbances and psychiatric disorders. An opportunity for prevention? JAMA 1989; 262: 1479–84.
Franzen PL, Buysse DJ. Sleep disturbances and depression: risk relationships for subsequent depression and therapeutic implications. Dialogues Clin Neurosci 2008; 10: 473–81.
Li L, Wu C, Gan Y, Qu X, Lu Z. Insomnia and the risk of depression: a meta-analysis of prospective cohort studies. BMC Psychiatry 2016; 16: 375.
Hertenstein E, Feige B, Gmeiner T, et al. Insomnia as a predictor of mental disorders: a systematic review and meta-analysis. Sleep Med Rev 2019; 43: 96–105.
Pigeon WR, Pinquart M, Conner K. Meta-analysis of sleep disturbance and suicidal thoughts and behaviors. J Clin Psychiatry 2012; 73: e1160–67.
Schennach R, Feige B, Riemann D, Heuser J, Voderholzer U. Pre- to post-inpatient treatment of subjective sleep quality in 5,481 patients with mental disorders: a longitudinal analysis. J Sleep Res 2019; 28: e12842.
Gee B, Orchard F, Clarke E, Joy A, Clarke T, Reynolds S. The effect of non-pharmacological sleep interventions on depression symptoms: a meta-analysis of randomised controlled trials. Sleep Med Rev 2019; 43: 118–28.
Espie CA, Emsley R, Kyle SD, et al. Effect of digital cognitive behavioral therapy for insomnia on health, pychological well-being, and sleep-related quality of life: a randomized clinical trial. JAMA Psychiatry 2019; 76: 21–30.
Cheng P, Kalmbach DA, Tallent G, Joseph CL, Espie CA, Drake CL. Depression prevention via digital cognitive behavioral therapy for insomnia: a randomized controlled trial. Sleep 2019; 42: zsz150.
Manber R, Buysse DJ, Edinger J, et al. Efficacy of cognitivebehavioral therapy for insomnia combined with antidepressant pharmacotherapy in patients with comorbid depression and insomnia: a randomized controlled trial. J Clin Psychiatry 2016; 77: e1316–23.
Carney CE, Edinger JD, Kuchibhatla M, et al. Cognitive behavioral insomnia therapy for those with insomnia and depression: a randomized controlled clinical trial. Sleep (Basel) 2017; 40: zsx019.
Blom K, Jernelöv S, Kraepelien M, et al. Internet treatment addressing either insomnia or depression, for patients with both diagnoses: a randomized trial. Sleep (Basel) 2015; 38: 267–77.
Stewart JW. Does a meta-analysis of sleep deprivation studies demonstrate efficacy? J Clin Psychiatry 2018, 79: 17lr12018.
Kragh M, Martiny K, Videbech P, et al. Wake and light therapy for moderate-to-severe depression—a randomized controlled trial. Acta Psychiatr Scand 2017; 136: 559–70.
van Straten A, van der Zweerde T, Kleiboer A, Cuijpers P, Morin CM, Lancee J. Cognitive and behavioral therapies in the treatment of insomnia: a meta-analysis. Sleep Med Rev 2018; 38: 3–16.
Clark DM. Anxiety disorders: why they persist and how to treat them. Behav Res Ther 1999; 37 (suppl 1): S5–27.
Riemann D, Spiegelhalder K, Feige B, et al. The hyperarousal model of insomnia: a review of the concept and its evidence. Sleep Med Rev 2010; 14: 19–31.
Spiegelhalder K, Regen W, Feige B, et al. Increased EEG sigma and beta power during NREM sleep in primary insomnia. Biol Psychol 2012; 91: 329–33.
Lind MJ, Hawn SE, Sheerin CM, et al. An examination of the etiologic overlap between the genetic and environmental influences on insomnia and common psychopathology. Depress Anxiety 2017; 34: 453–62.
Marcks BA, Weisberg RB, Edelen MO, Keller MB. The relationship between sleep disturbance and the course of anxiety disorders in primary care patients. Psychiatry Res 2010; 178: 487–92. 9
Lind MJ, Baylor A, Overstreet CM, et al. Relationships between potentially traumatic events, sleep disturbances, and symptoms of PTSD and alcohol use disorder in a young adult sample. Sleep Med 2017a; 34: 141–47.
Ohayon MM, Shapiro CM. Sleep disturbances and psychiatric disorders associated with posttraumatic stress disorder in the general population. Compr Psychiatry 2000; 41: 469–78.
Neylan TC, Marmar CR, Metzler TJ, et al. Sleep disturbances in the Vietnam generation: findings from a nationally representative sample of male Vietnam veterans. Am J Psychiatry 1998; 155: 929–33.
Zhang Y, Ren R, Sanford LD, et al. Sleep in posttraumatic stress disorder: a systematic review and meta-analysis of polysomnographic findings. Sleep Med Rev 2019; 48: 101210.
Germain A. Sleep disturbances as the hallmark of PTSD: where are we now? Am J Psychiatry 2013; 170: 372–82.
Germain A, Buysse DJ, Nofzinger E. Sleep-specific mechanisms underlying posttraumatic stress disorder: integrative review and neurobiological hypotheses. Sleep Med Rev 2008; 12: 185–95.
Spoormaker VI, Montgomery P. Disturbed sleep in post-traumatic stress disorder: secondary symptom or core feature? Sleep Med Rev 2008; 12: 169–84.
Zenses AK, Lenaert B, Peigneux P, Beckers T, Boddez Y. Sleep deprivation increases threat beliefs in human fear conditioning. J Sleep Res 2019; published online June 17. DOI:10.1111/jsr.12873.
Ben Simon E, Rossi A, Harvey AG, Walker MP. Overanxious and underslept. Nat Hum Behav 2019; 4: 100–110.
Kleim B, Wysokowsky J, Schmid N, Seifritz E, Rasch B. Effects of sleep after experimental trauma on intrusive emotional memories. Sleep (Basel) 2016; 39: 2125–32.
Straus LD, Acheson DT, Risbrough VB, Drummond SPA. Sleep deprivation disrupts recall of conditioned fear extinction. Biol Psychiatry Cogn Neurosci Neuroimaging 2017; 2: 123–129.
Kleim B, Wilhelm FH, Temp L, Margraf J, Wiederhold BK, Rasch B. Sleep enhances exposure therapy. Psychol Med 2014; 44: 1511–19.
Gehrman P, Seelig AD, Jacobson IG, et al. Predeployment sleep duration and insomnia symptoms as risk factors for new-onset mental health disorders following military deployment. Sleep (Basel) 2013; 36: 1009–18.
Koffel E, Polusny MA, Arbisi PA, Erbes CR. Pre-deployment daytime and nighttime sleep complaints as predictors of postdeployment PTSD and depression in National Guard troops. J Anxiety Disord 2013; 27: 512–19.
Acheson DT, Kwan B, Maihofer AX, et al. Sleep disturbance at pre-deployment is a significant predictor of post-deployment re-experiencing symptoms. Eur J Psychotraumatol 2019; 10: 1679964.
Koren D, Arnon I, Lavie P, Klein E. Sleep complaints as early predictors of posttraumatic stress disorder: a 1-year prospective study of injured survivors of motor vehicle accidents. Am J Psychiatry 2002; 159: 855–57.
Zhang Y, Ren R, Sanford LD. Posttraumatic stress disorder and somatic symptoms among child and adolescent survivors following the Lushan earthquake in China: a six-month longitudinal study. Sleep Med Rev 2019; 48: 101210.
Armenta RF, Rush T, LeardMann CA, Millegan J, Cooper A, Hoge CW. Factors associated with persistent posttraumatic stress disorder among U.S. military service members and veterans. BMC Psychiatry 2018; 18: 48.
Belleville G, Cousineau H, Levrier K, St-Pierre-Delorme ME, Marchand A. The impact of cognitive-behavior therapy for anxiety disorders on concomitant sleep disturbances: a meta-analysis. J Anxiety Disord 2010; 24: 379–86.
Woodward E, Hackmann A, Wild J, Grey N, Clark DM, Ehlers A. Effects of psychotherapies for posttraumatic stress disorder on sleep disturbances: results from a randomized clinical trial. Behav Res Ther 2017; 97: 75–85.
Galovski TE, Monson C, Bruce SE, Resick PA. Does cognitivebehavioral therapy for PTSD improve perceived health and sleep impairment? J Trauma Stress 2009; 22: 197–204.
Lommen MJ, Grey N, Clark DM, Wild J, Stott R, Ehlers A. Sleep and treatment outcome in posttraumatic stress disorder. Depress Anxiety 2016; 33: 575–83.
Ho FYY, Chan CS, Tang KNS. Cognitive-behavioral therapy for sleep disturbances in treating posttraumatic stress disorder symptoms: A meta-analysis of randomized controlled trials. Clin Psychol Rev 2016; 43: 90–102.
Ulmer CS, Edinger JD, Calhoun PS. A multi-component cognitivebehavioral intervention for sleep disturbance in veterans with PTSD: a pilot study. J Clin Sleep Med 2011; 7: 57–68.
Talbot LS, Maguen S, Metzler TJ, et al. Cognitive behavioral therapy for insomnia in posttraumatic stress disorder: a randomized controlled trial. Sleep (Basel) 2014; 37: 327–41.
Miller KE, Brownlow JA, Gehrman PR. Sleep in PTSD: treatment approaches and outcomes. Curr Opin Psychol 2019; 34: 12–17.
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