Cited by 228Sleep and Work-Related FatigueCircadian rhythm and melatoninWorkplace Health and Well-being

Night shift work at specific age ranges and chronic disease risk factors

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Ramin, Cody, Devore, Elizabeth E, Wang, Weike, Pierre-Paul, Jeffrey, Wegrzyn, Lani R, Schernhammer, Eva S·2015·Occupational and Environmental Medicine

Abstract

OBJECTIVES: We examined the association of night shift work history and age when night shift work was performed with cancer and cardiovascular disease risk factors among 54 724 women in the Nurses' Health Study (NHS) II. METHODS: We calculated age-adjusted and socioeconomic status-adjusted means and percentages for cancer and cardiovascular risk factors in 2009 across categories of night shift work history. We used multivariable-adjusted logistic regression to estimate odds ratios (ORs) and 95% CIs for key risk factors among 54 724 participants (72% ever shift workers). We further examined these associations by age (20-25, 26-35, 36-45 and 46+ years) at which shift work was performed. RESULTS: Ever night shift workers had increased odds of obesity (body mass index ≥30 kg/m(2); OR=1.37, 95% CI 1.31 to 1.43); higher caffeine intake (≥131 mg/day; OR=1.16, 95% CI 1.12 to 1.22) and total calorie intake (≥1715 kcal/day; OR=1.09, 95% CI 1.04 to 1.13); current smoking (OR=1.30, 95% CI 1.19 to 1.42); and shorter sleep durations (≤7 h of sleep/day; OR=1.19, 95% CI 1.15 to 1.24) compared to never night shift workers. These estimates varied depending on age at which night work was performed, with a suggestion that night shift work before age 25 was associated with fewer risk factors compared to night shift work at older ages. CONCLUSIONS: Our results indicate that night shift work may contribute to an adverse chronic disease risk profile, and that risk factors may vary depending on the age at which night shift work was performed.

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  • Chronic shift-workers are vulnerable to various diseases, including psychiatric disorders such as depression.

    “For example, chronic shift-workers (workers with rotating schedules or consistent night shifts) are vulnerable to various diseases13,14, including psychiatric disorders such as depression15–19.”

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Authors
Ramin, C., Devore, E. E., Wang, W., Pierre-Paul, J., Wegrzyn, L. R., & Schernhammer, E. S.
Affiliations
  • Brigham and Women's Hospital (US)
  • Harvard University (US)
  • Massachusetts College of Pharmacy and Health Sciences (US)
Corresponding author
Schernhammer, Eva S
Venue
Occupational and Environmental Medicine
Publisher
BMJ
Published
2014-09-26
Volume
72
Issue
2
Pages
100-107
ISSN
  • 0007-1072 (ISSN-L)
  • 1351-0711
  • 1470-7926
OpenAlex
W2140732231
Cited by
228
References
46
Citations by year
2026: 10 · 2025: 16 · 2024: 13 · 2023: 12 · 2022: 22 · 2021: 20 · 2020: 29 · 2019: 25 · 2018: 21 · 2017: 24 · 2016: 20 · 2015: 13
FWCI
26.36
Type
journal article
Language
en
Open access
Locations
  • Occupational and Environmental Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Cancer Institute (UM1CA176726, R25CA098566)
  • National Institute for Occupational Safety and Health (5R01OH009803, R01OH009803)
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Health Sciences › Health Professions › General Health Professions › Workplace Health and Well-being
Keywords
night shift work, shift work, cancer risk factors, cardiovascular risk factors, obesity, caffeine consumption, smoking, sleep duration, dietary intake, women, Nurses' Health Study II
MeSH terms
Adult, Age Factors, Caffeine, Energy Intake, Cardiovascular Diseases, Chronic Disease, Female, Humans, Middle Aged, Neoplasms, Nurses, Obesity, Occupational Diseases, Risk Factors, Sleep, Smoking, Work Schedule Tolerance, Body Mass Index, Odds Ratio, Occupational Exposure, Young Adult

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