Cited by 98Sleep and related disordersCircadian rhythm and melatoninCancer Risks and Factors

Sleep and survival among women with breast cancer: 30 years of follow-up within the Nurses’ Health Study

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Trudel-Fitzgerald, Claudia, Zhou, Eric S, Poole, Elizabeth M, Zhang, Xuehong, Michels, Karin B, Eliassen, A Heather, Chen, Wendy Y, Holmes, Michelle D +2 more·2017·British Journal of Cancer

Abstract

Breast cancer is a leading cause of cancer death in women. Sleep has been linked with mortality among cancer-free population; however, its association with survival among women with breast cancer is understudied. Breast cancer patients ( N =3682) reported their average sleep duration post diagnosis. Subsamples also provided their pre-diagnosis sleep duration ( n =1949) and post-diagnosis sleep difficulties ( n =1353). Multivariate Cox models estimated hazard ratios (HR) and confidence intervals (CI) of all-cause, breast cancer, and non-breast cancer mortality. At diagnosis, the mean age was 64.9 years and 91.7% were stage I or II. Women sleeping ⩾ 9 h per night post diagnosis had a strong higher risk of all-cause (multivariate HRs: MV-HR=1.37, CI=1.10–1.71), breast cancer (MV-HR=1.46, CI=1.02–2.07), and non-breast cancer mortality (MV-HR=1.34, CI=1.01–1.79), compared to women sleeping 8 h per night. Increased sleep duration post diagnosis ( vs unchanged) and regular sleep difficulties ( vs rare/none) were associated with a strong elevated risk of all-cause mortality (MV-HR increased duration =1.35, CI=1.04–1.74; MV-HR regular difficulties =1.49, CI=1.02–2.19) and a moderate greater risk of breast cancer and non-breast cancer mortality. Various facets of sleep were associated with higher all-cause mortality risk. If replicated, these findings support evaluation of breast cancer patients’ sleep duration and difficulties to identify those at risk for poorer outcomes.

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  • Untreated cancer-related insomnia may contribute to poorer treatment response, increased risk of cancer recurrence, and reduced survival.

    “Untread cancer-related insomnia may also contribute to poorer treatment response, increased risk of cancer recurrence, and reduced survival. 9-11”

    From Digital Cognitive-Behavioral Therapy for Insomnia in Cancer Survivors: Protocol for a Pragmatic Clinical Trial (2024) · cites this paper as [11]

    The Results (page not provided) associate regular difficulty falling or staying asleep with higher all-cause mortality among women with breast cancer, supporting the reduced-survival portion. The paper does not establish that insomnia was untreated or assess treatment response or cancer recurrence; its observed association also does not establish that insomnia caused poorer survival. (LLM, conf=0.88)

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Authors
Trudel-Fitzgerald, C., Zhou, E. S., Poole, E. M., Zhang, X., Michels, K. B., Eliassen, A. H., Chen, W. Y., Holmes, M. D., Tworoger, S. S., & Schernhammer, E. S.
Affiliations
  • Harvard University (US)
  • Brigham and Women's Hospital (US)
  • University of California, Los Angeles (US)
Venue
British Journal of Cancer
Published
2017-03-30
Volume
116
Issue
9
Pages
1239-1246
ISSN
  • 0007-0920 (ISSN-L)
  • 1532-1827
OpenAlex
W2601140727
Cited by
98
References
55
Citations by year
2026: 8 · 2025: 7 · 2024: 7 · 2023: 13 · 2022: 14 · 2021: 16 · 2020: 9 · 2019: 11 · 2018: 11 · 2017: 2
FWCI
11.75
Type
journal article
Language
en
Update notices
erratum (2018-01-09)
Open access
Locations
  • British Journal of Cancer (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
Funders
  • Canadian Institutes of Health Research (P01 CA87969, UM1 CA186107)
  • National Cancer Institute (K07CA188126, P01CA087969, UM1CA186107)
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Health Sciences › Medicine › Oncology › Cancer Risks and Factors
Keywords
breast cancer, sleep duration, sleep disorders, cancer survival, mortality, all-cause mortality, breast cancer mortality, non-breast cancer mortality, Nurses' Health Study, women
MeSH terms
Adult, Aged, Breast Neoplasms, Female, Follow-Up Studies, Humans, Middle Aged, Neoplasm Recurrence, Local, Risk Factors, Sleep, Time Factors, Proportional Hazards Models, Disease-Free Survival

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