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Rotating shift work associated with obesity in men from northeastern Ontario
Anne Grundy1,2, Michelle Cotterchio3,4, Victoria A Kirsh4
1Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), Montréal, Quebec, Canada.
Summary
Rotating shift work is associated with increased risk of overweight and obesity in men. Longer duration of rotating shifts further elevates these risks, highlighting the impact of work schedules on health.
Area of Science:
- Occupational Health
- Epidemiology
- Public Health
Background:
- Obesity is a significant public health concern linked to chronic diseases.
- Previous research suggests a link between shift work and obesity, but population-based studies with detailed exposure assessments are limited.
- Understanding the specific types of shift work associated with obesity is crucial for targeted interventions.
Purpose of the Study:
- To investigate the association between different shift work schedules (evening/night, rotating) and overweight/obesity.
- To examine the relationship between the duration of rotating shift work and body mass index (BMI).
Main Methods:
- Cross-sectional study involving 1561 men from a population-based prostate cancer case-control study.
- Multivariate polytomous logistic regression analysis used to assess associations.
- Data on work history, height, and weight were obtained from self-reported questionnaires.
Main Results:
- Ever working rotating shifts was significantly associated with both overweight (OR=1.34) and obesity (OR=1.57).
- A significant trend of increased risk for overweight and obesity was observed with longer durations of rotating shift work.
- Non-significant associations were found for permanent evening/night shifts.
Conclusions:
- Rotating shift work shows a positive association with overweight and obesity.
- Findings align with previous research, suggesting rotating shifts may significantly impact BMI.
- Further population-based research with detailed shift work characteristics is needed to confirm associations for other shift patterns.