Related Experiment Videos
Shiftwork and cardiovascular disease: review of disease mechanisms
1Department of Public Health and Clinical Medicine, Occupational Medicine, Umeå University Hospital, 90185 Umeå, Sweden. anders.knutsson@envmed.umu.se
Insights
Shift work increases coronary heart disease (CHD) risk through social issues, unhealthy behaviors like smoking, and disrupted circadian rhythms leading to sleep loss and poor timing of meals and exercise.
Area of Science:
- Occupational Health
- Cardiovascular Medicine
- Chronobiology
Background:
- Shift work is prevalent in modern society.
- Shift workers exhibit a higher risk of coronary heart disease (CHD).
- Understanding the mechanisms linking shift work to CHD is crucial for public health.
Purpose of the Study:
- To review the primary findings on mechanisms explaining the elevated CHD risk in shift workers.
- To present a conceptual model outlining key pathways from shift work to CHD.
Main Methods:
- Literature review of existing research on shift work and cardiovascular health.
- Conceptual modeling to integrate different risk pathways.
Main Results:
- Shift work is associated with social problems, potentially increasing stress.
- Behavioral changes, including smoking and poor diet, are linked to shift work.
- Disturbed circadian rhythms can cause sleep deprivation and affect the timing of physiological processes.
Conclusions:
- Shift work poses a significant risk to cardiovascular health through multiple interconnected pathways.
- Interventions targeting social, behavioral, and circadian disruptions may mitigate CHD risk in shift workers.
- Further research is needed to fully elucidate and address these complex mechanisms.
Abstract:
This paper reviews the main findings concerning mechanisms explaining the increased risk of coronary heart disease (CHD) in shiftworkers. We discuss a conceptual model, in which three main shiftwork pathways to CHD are postulated--social problems, behavioral change, and disturbed circadian rhythm. Social problems that are associated with shiftwork might lead to stress. Significant shiftwork-related behavioral problems are smoking and unhealthy food habits. Disturbed circadian rhythm might result in sleep deprivation. Unphysiologic timing of physical activity and food intake in relation to circadian rhythms is another possible explanation for the negative impact on the cardiovascular system.