Metabolic syndrome and shift work: a systematic review
Abstract
The aim of this systematic review was to examine the association between shift work and metabolic syndrome (MetS) as well as the potential confounders investigated. A systematic search was conducted with the aim of finding original articles on the association between shift work and MetS. The included articles were chosen based on established inclusion criteria; their methodological quality was assessed using a validated quality checklist. A total of 10 articles were included in this review. The majority of the studies were classified as having a low risk of bias. The definitions of MetS and shift work varied between studies. Among the ten studies, eight found a positive association between shift work and MetS after controlling for socio-demographic and behavioral factors. Only three studies included sleep duration as a confounder, and these studies presented discordant results. We conclude that there was insufficient evidence regarding the association between shift work and prevalent MetS when the confounders are taken into account.
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Shift workers working during their circadian night are more likely to develop metabolic disturbances.
“Most of this evidence is derived from studies on different models of shift work, which found that shift workers working during their circadian night are more likely to develop metabolic disturbances (109).”
From Chronotype: Implications for Epidemiologic Studies on Chrono-Nutrition and Cardiometabolic Health (2019) · cites this paper as [109]
Eating late may negatively impact the success of weight loss in a cohort of 420 participants.
“Recent work by Garaulet et al. investigated the link between the timing of food intake during weight loss studies and found that eating late may negatively impact the success of weight loss in a cohort of 420 participants (49•5 % female, aged 42 (SD 11) years, BMI 31•4 (SD 5•4) kg/m 2 ).”
From Meal irregularity and cardiometabolic consequences: results from observational and intervention studies (2016) · cites this paper as [54]
The CLOCK rs4580704 was associated with the timing of the main meal, with a higher frequency of minor allele C carriers among late eaters.
“They also included a SNP of CLOCK in their investigations and found that the CLOCK rs4580704 was associated with the timing of the main meal, with a higher frequency of minor allele C carriers among late eaters.”
From Meal irregularity and cardiometabolic consequences: results from observational and intervention studies (2016) · cites this paper as [54]
The CLOCK SNP, sleep duration or chrono-type (morningness/eveningness) was not associated with weight loss.
“However, this CLOCK SNP, sleep duration or chrono-type (morningness/eveningness) was not associated with weight loss (54) .”
From Meal irregularity and cardiometabolic consequences: results from observational and intervention studies (2016) · cites this paper as [54]
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- Authors
- Canuto, R., Garcez, A. S., & Olinto, M. T. A.
- Affiliations
- Universidade Federal do Rio Grande do Sul (BR)
- Universidade Federal de Ciências da Saúde de Porto Alegre (BR)
- Corresponding author
- Olinto, Maria T.A.
- Venue
- Sleep Medicine Reviews
- Publisher
- Elsevier BV
- Published
- 2013-12
- Volume
- 17
- Issue
- 6
- Pages
- 425-431
- ISSN
- 1087-0792 (ISSN-L)
- OpenAlex
- W2157940848
- Cited by
- 130
- References
- 60
- Citations by year
- 2026: 3 · 2025: 4 · 2024: 9 · 2023: 3 · 2022: 16 · 2021: 15 · 2020: 12 · 2019: 14 · 2018: 9 · 2017: 7 · 2016: 12 · 2015: 15 · 2014: 6 · 2013: 3
- FWCI
- 2.00
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Sleep Medicine Reviews (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (304793/2010-8)
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
- 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
- shift work, metabolic syndrome, sleep duration, confounding factors, circadian rhythm disruption, occupational health
- MeSH terms
- Humans, Risk Factors, Work Schedule Tolerance, Sleep Disorders, Circadian Rhythm, Metabolic Syndrome
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