Nurse Health: The Influence of Chronotype and Shift Timing

Area of Science:

• Nursing
• Chronobiology
• Occupational Health

Background:

• Extreme chronotypes and circadian-disrupting work hours are potential risk factors for nurse disease.
• Nurses often face challenges balancing work schedules with natural sleep-wake cycles.

Purpose of the Study:

• To investigate the relationship between chronotype, shift work, and health outcomes in nurses.
• To test hypotheses linking chronotype/shift incongruence to obesity and cardiovascular disease risks.

Main Methods:

• National cross-sectional study of 527 nurses.
• Assessed chronotype, shift work patterns, sleep duration, and health outcomes (obesity, cardiovascular disease).
• Statistical analyses including exploratory interaction analysis.

Main Results:

• No direct association found between chronotype match/mismatch and obesity or cardiovascular disease.
• Nurses with mismatched chronotypes and above-average sleep quality had 3.51 times higher odds of obesity.
• Mismatched chronotype nurses reported lower average sleep duration (6.1 hours).

Conclusions:

• Sleep quality may be intricately linked to obesity in nurses, even with chronotype mismatch.
• Further research is needed to understand the mechanisms and inform health strategies for nurses.
• Highlighting the importance of addressing disrupted sleep and chronotype in occupational health for nurses.