Insomnia and the Risk of Breast Cancer: The HUNT Study  

Oleh:

Sen, Abhijit ; Opdahl, Signe ; Strand, Linn Beate ; Vatten, Lars Johan ; Laugsand, Lars Erik ; Janszky, Imre

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Psychosomatic Medicine: Journal of Biobehavioral Medicine vol. 79 no. 04 (May 2017), page 461-468.
Topik: Sleep; Sleep Disturbance; Insomnia; Breast Cancer
Fulltext: P01 v79 n4 p461 kelik2017.pdf (146.72KB)

Ketersediaan

Perpustakaan FK Nomor Panggil: P01.K Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Objective: The association of insomnia with subsequent breast cancer risk is largely unknown. Therefore, we assessed whether different symptoms of insomnia and their combination are associated with incident breast cancer in a large population-based study. Methods: In a prospective cohort study, 33,332 women were followed to monitor the occurrence of their first invasive breast cancer identified by the Cancer Registry of Norway. Insomnia symptoms including (1) nonrestorative sleep and (2) difficulty initiating and (3) maintaining sleep were self-reported using a study specific measure reflecting the current Diagnostic and Statistical Manual of Mental Disorders criteria. Hazard ratios and 95% confidence intervals were calculated using multiadjusted Cox proportional hazards models. Results: A total of 862 incident breast cancer cases occurred during a mean follow-up of 14.7 years. No consistent association was observed between the individual insomnia symptoms and breast cancer risk. However, compared to women reporting no insomnia complaints, those who reported having all three aspects of insomnia simultaneously were at increased risk (hazard ratio, 2.38; 95% confidence interval = 1.11–5.09). Conclusion: Our results suggest that having only some aspects of insomnia may not predispose someone to breast cancer. In contrast, experiencing all insomnia symptoms simultaneously might confer considerable excess risk.

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