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Related Experiment Video

Updated: Jun 16, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments

Published on: August 8, 2019

Obesity and shift work: chronobiological aspects.

L C Antunes¹, R Levandovski, G Dantas

¹Post-Graduation Program in Medical Sciences, School of Medicine, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil.

Nutrition Research Reviews

|February 4, 2010

Summary

Shift work disrupts the body

Area of Science:

Chronobiology
Metabolic Health
Occupational Health

Background:

Shift work is prevalent globally, impacting numerous industries and workforces.
Growing evidence links shift work to increased prevalence of overweight and obesity.
Shift workers often experience weight gain compared to day workers.

Purpose of the Study:

To review the chronobiological factors connecting shift work and obesity.
To synthesize current research on the relationship between circadian rhythm disruption and metabolic health in shift workers.

Main Methods:

Systematic literature search of PubMed database.
Keywords used: shift work, obesity, biological clock.
Review of epidemiological and physiological studies.

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Last Updated: Jun 16, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments

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Published on: August 8, 2019

Through-the-Wall Blood Sampling Method to Minimize Sleep Disruption in Clinical Settings

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Main Results:

Shift work is associated with a higher risk of obesity, diabetes, and cardiovascular disease (CVD).
Physiological maladaptation to irregular sleep-eat cycles contributes to metabolic dysfunction.
Circadian misalignment in shift workers has adverse cardiometabolic implications.

Conclusions:

Shift work poses a significant risk factor for obesity and related comorbidities.
Disruption of biological rhythms by shift work negatively impacts metabolism.
Addressing circadian misalignment is crucial for mitigating health risks in shift workers.