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Sleep and sleepiness in environmental intolerances: a population-based study
Umeå universitet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi. Stress Research Institute, Stockholm University, Sweden.
Umeå universitet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi.
2016 (Engelska)Ingår i: Sleep Medicine, ISSN 1389-9457, E-ISSN 1878-5506, Vol. 24, s. 1-9Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Background: About one fourth of the general population report environmental intolerance (El) to odorous/pungent chemicals, certain buildings, electromagnetic fields (EMFs), and/or sounds. EI sufferers show various clinical features, of which sleep disturbance is one. Sleep disturbance is common also in the general population, but it is not known whether the disturbance is more prominent in EI sufferers than in individuals who do not experience EI. Therefore, El was compared on various sleep aspects with referents without El. 

Methods: A population-based sample of 3406 individuals, aged 18-79 years, was recruited from Northern Sweden. Sleep quality, non-restorative sleep, daytime sleepiness, obstructive breathing, and nocturnal insomnia were assessed with the Karolinska Sleep Questionnaire. Single questions assessed time slept, amount of hours of needed sleep, and extent of enough time slept. 

Results: All four EI groups, compared to the referents, reported significantly poorer sleep quality, more non-restorative sleep, more daytime sleepiness, more obstructive breathing and higher prevalence of nocturnal insomnia than the referents. Nocturnal insomnia was an important factor for El groups attributing their most prevalent symptoms to chemicals and sounds, irrespective of distress and certain syndromes. None of the EI groups differed significantly from the referents on time slept, but reported needing more sleep time (the EMF-intolerance group showing only a tendency), and all four groups reported to perceive enough sleep to a significantly lesser extent. 

Conclusion: Sleep disturbance and daytime sleepiness are more common in individuals reporting El compared to normal referents. Moreover, nocturnal insomnia is an important symptom in its own right in various types of EI. This evokes the question of whether or not sleep therapy may attenuate the severity of the El.

Ort, förlag, år, upplaga, sidor
2016. Vol. 24, s. 1-9
Nyckelord [en]
Multiple chemical sensitivity, Nonspecific building-related symptoms, Electromagnetic hypersensitivity, Hyperacusis, Obstructive breathing, Insomnia
Nationell ämneskategori
Samhällsvetenskap Tillämpad psykologi
Identifikatorer
URN: urn:nbn:se:umu:diva-128744DOI: 10.1016/j.sleep.2016.06.014ISI: 000388541900001OAI: oai:DiVA.org:umu-128744DiVA, id: diva2:1056053
Tillgänglig från: 2016-12-13 Skapad: 2016-12-13 Senast uppdaterad: 2018-06-09Bibliografiskt granskad

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Nordin, MariaNordin, Steven

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