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Sleep Duration and Prostate Cancer Risk in the Southern Community Cohort Study.

Danica C Anukam1, Roch A Nianogo1, Onyebuchi A Arah1,2,3

  • 1Department of Epidemiology, UCLA Fielding School of Public Health, Los Angeles, California, USA.

Cancer Medicine
|January 3, 2026
PubMed
Summary
This summary is machine-generated.

Short sleep duration may decrease prostate cancer risk, particularly for Black men. Sleep duration was not linked to aggressive prostate cancer, warranting further research into racial differences.

Keywords:
SCCSprostate cancerracial disparitiessleep duration

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Area of Science:

  • Epidemiology
  • Cancer Research
  • Sleep Medicine

Background:

  • The link between inadequate sleep and prostate cancer risk remains unclear.
  • Investigating sleep duration, restless sleep, and prostate cancer incidence is crucial.
  • Understanding race as a factor in sleep-prostate cancer associations is needed.

Purpose of the Study:

  • To examine the association between sleep duration, restless sleep, and prostate cancer incidence.
  • To investigate the relationship between sleep patterns and prostate cancer aggressiveness.
  • To determine if race modifies the association between sleep and prostate cancer.

Main Methods:

  • Utilized data from the Southern Community Cohort Study (SCCS), including nearly 35,000 men (67% African American).
  • Assessed sleep exposures (duration, restlessness) via baseline questionnaire.
  • Employed Cox proportional hazards and multinomial logistic regression models.

Main Results:

  • Shorter sleep duration (<6 hours) was suggestively linked to decreased prostate cancer risk overall and in Black men.
  • No significant association was found between sleep duration/restless sleep and prostate cancer aggressiveness.
  • Stratified analysis indicated a potential risk reduction in Non-Hispanic Black men sleeping <6 hours.

Conclusions:

  • Shorter sleep duration shows a suggestive association with reduced prostate cancer risk, but not aggressiveness.
  • A potential protective effect of shorter sleep duration was observed in Non-Hispanic Black men.
  • Further research is necessary to explore confounding factors and racial disparities in prostate cancer development.