Relationships of sleep traits with prostate cancer risk: A prospective study of 213,999 UK Biobank participants

Apr 11, 2022The Prostate

Links between sleep patterns and prostate cancer risk in 213,999 UK adults

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Abstract

6747 incident cases of prostate cancer were identified among 213,999 individuals in a UK Biobank cohort study.

Insomnia is associated with a higher risk of prostate cancer, with a hazard ratio of 1.11.
Finding it fairly easy to get up in the morning is linked to an increased incidence of prostate cancer (hazard ratio: 1.09).
Usually having a nap is associated with a lower risk of prostate cancer, with a hazard ratio of 0.91.
The study created a healthy sleep quality score to assess the impact of various sleep traits on prostate cancer development.
Unmeasured confounding was evaluated using E values, indicating the robustness of the findings.

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BACKGROUND: The effect of sleep on the occurrence of prostate cancer (PCa) remains unclear. This study explored the influence of sleep traits on the incidence of PCa using a UK Biobank cohort study.

METHODS: In this prospective cohort study, 213,999 individuals free of PCa at recruitment from UK Biobank were included. Missing data were imputed using multiple imputation by chained equations. Cox proportional hazards models were used to calculate the adjusted hazard ratios and 95% confidence intervals for PCa (6747 incident cases) across seven sleep traits (sleep duration, chronotype, insomnia, snoring, nap, difficulty to get up in the morning, and daytime sleepiness). In addition, we newly created a healthy sleep quality score according to sleep traits to assess the impact of the overall status of night and daytime sleep on PCa development. E values were used to assess unmeasured confounding.

RESULTS: We identified 6747 incident cases, of which 344 died from PCa. Participants who usually suffered from insomnia had a higher risk of PCa (hazard ratio [HR]: 1.11; 95% confidence interval [CI]: 1.04-1.19, E value: 1.46). Finding it fairly easy to get up in the morning was also positively associated with PCa (HR: 1.09; 95% CI: 1.04-1.15, E value: 1.40). Usually having a nap was associated with a lower risk of PCa (HR: 0.91; 95% CI: 0.83-0.99, E value: 1.42).

CONCLUSIONS: Fairly easy to get up in the morning and usually experiencing insomnia were associated with an increased incidence of PCa. Moreover, usually having a nap was associated with a lower risk of PCa. Therefore, sleep behaviors are modifiable risk factors that may have a potential impact on PCa risk.

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Relationships of sleep traits with prostate cancer risk: A prospective study of 213,999 UK Biobank participants

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