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Controlled Exposure to Light and Darkness Realigns the Salivary Cortisol Rhythm in Night Shift Workers
Timed light and dark exposure resets daily stress hormone cycle in night shift workers
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Abstract
Night shift workers receiving a light/darkness intervention showed significant shifts in cortisol expression timing.
- Intervention included bright light exposure and shielding from morning light.
- Treatment group exhibited realignment of their physiological rhythms with night-oriented schedules.
- Control group demonstrated only smaller phase shifts, indicating incomplete adaptation.
- Findings suggest that managing light and darkness exposure may aid in adjusting physiological responses to night shift work.
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