Sleep duration and cancer risk in women

Hurley, Susan; Goldberg, Debbie; Bernstein, Leslie; Reynolds, Peggy

doi:10.1007/s10552-015-0579-3

Cited by 60 publications

(72 citation statements)

References 43 publications

(49 reference statements)

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“…Indeed, pregnant women with RLS had higher blood concentrations of estrogen than those of pregnant, healthy controls during the third trimester (Dzaja, Wehrle, Lancel, & Pollmächer, 2009). Moreover, long sleep duration (> 10h/night) was recently associated with an increased risk for developing estrogen-related cancer among women from the general population (Hurley, Goldberg, Bernstein, & Reynolds, 2015) suggesting either a higher estrogen concentration or higher sensitivity to estrogen among them.…”

Section: Discussionmentioning

confidence: 99%

Sleep Trajectories Among Pregnant Women and the Impact on Outcomes: A Population-Based Cohort Study

Plancoulaine

Flori

Bat-Pitault

et al. 2017

Matern Child Health J

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Objectives Sleep problems and deprivation are common during pregnancy, particularly in the third trimester. Previous studies are mostly descriptive or focused on specific clinical groups and late pregnancy. We aimed to identify sleep duration trajectories during the pregnancy period, their associated factors, and impact on pregnancy and birth outcomes. Methods We studied 200 women from a mother-child cohort recruited in 2009-2011 from the French general population. We used semi-parametric models to analyze data collected through questionnaires. Results We detected three sleep duration trajectories during pregnancy: short-decreasing (<6.5h/night, 10.8% of the sample), medium-decreasing (6.5-8h/night, 57.6%), and long-increasing (>8h/night, 31.6%) trajectories. Factors associated with the short-decreasing trajectory relative to the medium-decreasing trajectory were older age (odds-ratio/year = 1.13 [95%Confidence-Interval 1.00-1.29]) and working > 28 weeks of gestational age (odds-ratio = 0.30 [0.10-0.90]). Sleep duration during pregnancy in this trajectory group was modified by insomniac symptoms (regression coefficient/trimester = -0.74 [Standard-Error 0.12]) and naps (regression coefficient/trimester = 0.58 [0.25]). Restless legs syndrome was the only factor associated with the long-increasing trajectory and decreased sleep duration (regression coefficient/trimester = -0.88 [0.25]). Assisted delivery (i.e. cesarean section and/or instrumental delivery) and post-partum depression were more frequent among women with the short-decreasing and long-increasing trajectories whereas cesarean section alone was more prevalent among those with the short-decreasing trajectory. Proportion of premature births was higher in the short-decreasing trajectory group. Birth-weight-z-score was lower in the long-increasing trajectory group. Conclusion We identified sleep trajectories among pregnant women with specific risk factors that could affect both pregnancy and birth outcomes. Taking these into consideration could improve both maternal and child health.

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Section: Discussionmentioning

confidence: 99%

Sleep Trajectories Among Pregnant Women and the Impact on Outcomes: A Population-Based Cohort Study

Plancoulaine

Flori

Bat-Pitault

et al. 2017

Matern Child Health J

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“…Previous studies have reported a mix of positive, negative and null results for the association between sleep duration and breast cancer risk, but meta-analyses have found little evidence of heterogeneity, 8,13,[15][16][17][29][30][31][32][33][34][35][36][37][38] and have largely concluded null associations. 8,13,39 Some studies have shown variability in sleep duration with ER status with a decreased risk for ER1 breast cancer with short sleep and an increased risk for ER-breast cancer with short sleep.…”

Section: Discussionmentioning

confidence: 99%

Sleep characteristics, light at night and breast cancer risk in a prospective cohort

White

Weinberg

Park

et al. 2017

Intl Journal of Cancer

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Increasing numbers of women in the US are getting too little sleep. Inadequate sleep has been associated with impaired metabolic function and endocrine disruption. Sister Study cohort participants (n=50,884), completed baseline and follow-up questionnaires on sleep patterns. Incident breast cancers estrogen receptor (ER) status of the tumor were ascertained from questionnaires and medical records. Cox regression was used to estimate adjusted hazard ratios (HRs) and 95% confidence intervals (95% CIs). Analyses of sleep characteristics reported at the first follow-up interview included only participants who were breast cancer-free at time of follow-up interview. Over ~7 years of follow-up, 2,736 breast cancer cases (invasive and ductal carcinoma in situ) were diagnosed. There was little evidence that usual sleep duration or other sleep characteristics were associated with breast cancer. However, relative to those with no difficulty sleeping, women who reported having difficulty sleeping ≥ 4 nights a week were at an increased risk of overall (HR=1.32, 95% CI: 1.09–1.61) and postmenopausal breast cancer (HR=1.51, 95% CI 1.24–1.85). Risk of ER+ invasive cancer was elevated for women who reported having a light or television on in the room while sleeping (HR=1.20, 95% CI: 0.97–1.47) or who typically got less sleep than they needed to feel their best (HR=1.21, 95% CI: 0.98–1.50). In our study, most sleep characteristics, including sleep duration, were not associated with an increased risk although higher risk was observed for some markers of inadequate or poor quality sleep.

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“…Few observational studies have examined associations between sleep duration and risk of colorectal cancer[9–11], and the only study that previously examined this association found a 50% increased risk in colorectal adenoma with shorter sleep duration (OR 1.49, 95% CI: 1.02–2.19)[6]. However, the authors did not account for confounding by important lifestyle factors (e.g., diet and physical activity) in their analyses; therefore, this result could be explained at least in part by residual confounding.…”

Section: Discussionmentioning

confidence: 99%

Rotating night shift work, sleep, and colorectal adenoma in women

Devore

Massa

Papantoniou

et al. 2017

Int J Colorectal Dis

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Purpose To investigate the associations of rotating night shift work history and sleep duration with risk of colorectal adenoma. Methods We evaluated 56,275 cancer-free participants of the Nurses’ Health Study II, who had their first colonoscopy or sigmoidoscopy between 1991 and 2011; rotating night shift work and sleep duration were reported by mailed questionnaire. Multivariable-adjusted logistic regression was used to estimate relative risks (RR) of colorectal adenoma, with 95% confidence intervals (CI), across categories of rotating night shift work history (none, 1–4, 5–9, and ≥10 years) and sleep duration (≤5, 6, 7, 8, and ≥9 hours/day). Results We found no association between duration of rotating night shift work and occurrence of colorectal adenoma (p-trend across shift work categories=0.5). Women with the longest durations of rotating night shift work (≥10 years) had a similar risk of adenoma compared to women without a history of rotating night shift work (multivariable-adjusted RR: 0.96, 95% CI: 0.83–1.11). Similarly, there were no associations of shorter or longer sleep durations with adenoma risk (p-trend=0.2 across sleep durations of ≤5 through 7 hours/day, and p-trend=0.5 across sleep durations of 7 through ≥9 hours/day). Results were similar when we examined associations according to adenoma location and subtype. Conclusions Our results do not support an association between rotating night shift work or sleep duration and risk of colorectal adenoma in women.

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Sleep duration and cancer risk in women

Cited by 60 publications

References 43 publications

Sleep Trajectories Among Pregnant Women and the Impact on Outcomes: A Population-Based Cohort Study

Sleep Trajectories Among Pregnant Women and the Impact on Outcomes: A Population-Based Cohort Study

Sleep characteristics, light at night and breast cancer risk in a prospective cohort

Rotating night shift work, sleep, and colorectal adenoma in women

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