Night shift work, dietary patterns, and coronary heart disease.

Area of Science:

• Occupational Health
• Cardiovascular Disease Epidemiology
• Nutritional Science

Background:

• Shift work is linked to increased coronary heart disease (CHD) incidence compared to daytime work.
• Dietary factors like fiber intake and meat consumption are associated with cardiovascular health.
• Understanding the interplay between shift work and diet is crucial for public health strategies.

Purpose of the Study:

• To investigate the association between shift work, dietary fiber intake, meat avoidance, and CHD incidence.
• To determine if dietary factors modify the relationship between night shift work and CHD risk.
• To provide evidence-based dietary recommendations for shift workers to reduce CHD risk.

Main Methods:

• Utilized UK Biobank data from 222,801 participants.
• Categorized participants into daytime, occasional night shift, and regular night shift workers.
• Assessed dietary habits via questionnaires and tracked CHD events over a median follow-up of 12.6 years.

Main Results:

• Regular night shift work was associated with a 10% higher CHD incidence compared to daytime work.
• Higher daily fiber intake attenuated the increased CHD risk associated with night shift work.
• Meat avoidance was linked to a modest reduction in CHD risk, independent of work schedule.

Conclusions:

• Regular night shift work poses a significant risk for coronary heart disease.
• Increasing dietary fiber intake may be a key strategy to reduce CHD risk specifically for night shift workers.
• Meat avoidance aligns with general cardiovascular health recommendations and may offer a modest protective effect against CHD.