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Sleep disruption among older men and risk of prostate cancer
Örebro University, School of Health and Medical Sciences, Örebro University, Sweden.ORCID iD: 0000-0002-3649-2639
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2013 (English)In: Cancer Epidemiology, Biomarkers and Prevention, ISSN 1055-9965, E-ISSN 1538-7755, Vol. 22, no 5, p. 872-879Article in journal (Refereed) Published
Abstract [en]

Background: Although positive associations have consistently been reported between sleep disruption and breast cancer, less is known about its potential role in prostate cancer.

Methods: Within the prospective AGES-Reykjavik cohort study, we followed 2,102 men recruited in 20022006 until the end of 2009. Participants answered questions on sleep disruption. Information on the occurrence of prostate cancer was obtained through record linkages across the Icelandic Cancer Registry. We used Cox regression models with 95% confidence intervals (CI) to estimate HRs of prostate cancer by symptoms of sleep disruption.

Results: During follow-up, 135 men (6.4%) were diagnosed with prostate cancer. Compared with men without sleep disruption, those with problems falling and staying asleep were at significantly increased risk of prostate cancer [HR, 1.7 (95% CI, 1.0-2.9) and 2.1 (95% CI, 1.2-3.7)], respectively, with increasing sleep disruption severity. When restricted to advanced prostate cancer (>= stage T3 or lethal disease), these associations became even stronger [HR 2.1 (95% CI, 0.7-6.2) and 3.2 (95% CI, 1.1-9.7)]. The results did not change after excluding from the analyses men who woke up during the night, indicative of nocturia, suggesting limited risk of reverse association.

Conclusions: Our data suggest that certain aspects of sleep disruption may confer an increased risk of prostate cancer and call for additional, larger studies with longer follow-up times.

Impact: Prostate cancer is one of the leading public health concerns in men; if confirmed in future studies, the association between sleep disruption and prostate cancer risk may open new avenues for prevention.

Place, publisher, year, edition, pages
2013. Vol. 22, no 5, p. 872-879
National Category
Medical and Health Sciences
Research subject
Medicine
Identifiers
URN: urn:nbn:se:oru:diva-29765DOI: 10.1158/1055-9965.EPI-12-1227-TISI: 000318894200015OAI: oai:DiVA.org:oru-29765DiVA, id: diva2:633661
Available from: 2013-06-27 Created: 2013-06-25 Last updated: 2017-12-06Bibliographically approved

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