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Shift Work and Obesity Risk-Are There Sex Differences?
Kevin L Smith1, Alexandria B Danyluk2, Sanah S Munir3
1Department of Pediatrics, Children's Hospital of Pittsburgh, Pittsburgh, PA, USA.
Shift work increases obesity risk, particularly abdominal obesity, due to circadian disruption and lifestyle factors. Sex differences in this risk remain unclear, requiring further investigation.
Area of Science:
- Occupational Health
- Endocrinology
- Obesity Research
Background:
- Shift work is common and associated with negative health effects.
- Obesity is a growing public health concern with complex causes.
Purpose of the Study:
- To review evidence linking shift work to obesity risk.
- To explore potential sex differences in this association.
Main Methods:
- Systematic review of observational studies.
- Analysis of data on prevalent and incident obesity, including abdominal obesity.
Main Results:
- Strong evidence links shift work to increased obesity risk.
- Circadian misalignment and unhealthy behaviors are key mediators.
- Few studies address sex differences, with conflicting results.
Conclusions:
- Shift work is a significant obesity risk factor.
- Biological and behavioral mechanisms are involved.
- The role of sex in shift work's obesogenic effect needs more research.
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