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Association between Sleep Duration and Cancer Risk: A Meta-Analysis of Prospective Cohort Studies

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  • Yan Lu
  • Nong Tian
  • Jie Yin
  • Yuhua Shi
  • Zhenping Huang

Abstract

Background: Sleep duration has been shown to play an important role in the development of cancer. However, the results have been inconsistent. A meta-analysis with prospective cohort studies was performed to clarify the association between short or long sleep duration and cancer risk. Methods: PubMed and Embase databases were searched for eligible publications. Pooled relative risk (RR) with 95% confidence interval (CI) was calculated using random- or fixed- model. Results: A total of 10 prospective studies (8392 incident cases and 555678 participants) were included in the meta-analysis. Neither short nor long sleep duration was statistically associated with increased risk of cancer (short sleep duration: RR=1.05, 95%CI=0.90-1.24, p=0.523; long sleep duration: RR=0.92, 95%CI=0.76-1.12, p=0.415). In the subgroup by cancer type, long sleep duration was positively associated with colorectal cancer (RR=1.29, 95%CI=1.09-1.52, p=0.003). Conclusion: The present meta-analysis suggested that neither short nor long sleep duration was significantly associated with risk of cancer, although long sleep duration increased risk of with colorectal cancer. Large-scale well-design prospective studies are required to be conducted to further investigate the observed association.

Suggested Citation

  • Yan Lu & Nong Tian & Jie Yin & Yuhua Shi & Zhenping Huang, 2013. "Association between Sleep Duration and Cancer Risk: A Meta-Analysis of Prospective Cohort Studies," PLOS ONE, Public Library of Science, vol. 8(9), pages 1-1, September.
    • Handle: RePEc:plo:pone00:0074723
    DOI: 10.1371/journal.pone.0074723
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    Cited by:

    1. Shang-Lin Chiang & Li-Chi Chiang & Wen-Chii Tzeng & Meei-Shyuan Lee & Chan-Chuan Fang & Chueh-Ho Lin & Chia-Huei Lin, 2022. "Impact of Rotating Shifts on Lifestyle Patterns and Perceived Stress among Nurses: A Cross-Sectional Study," IJERPH, MDPI, vol. 19(9), pages 1-11, April.

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