Melatonin and Cortisol Suppression and Circadian Rhythm Disruption in Burnout Among Healthcare Professionals: A Systematic Review
Abstract
Background: Burnout among healthcare professionals is increasingly recognized as a syndrome with biological correlations. Beyond psychosocial factors, circadian misalignment, sleep disturbances, and hormonal dysregulation—particularly involving melatonin and cortisol—are emerging as relevant mechanisms. Methods: We systematically reviewed studies published between 2015 and 2025 examining associations between burnout, melatonin, circadian disruption, sleep quality, and related biomarkers in healthcare workers. Results: Across 14 included studies, burnout was associated with suppressed melatonin secretion, cortisol dysregulation, and circadian misalignment, including social jet lag and poor sleep quality. Night-shift nurses consistently displayed greater circadian disruption and higher burnout scores than day-shift colleagues. Evidence also suggests that environmental and interventional approaches—such as optimizing daylight exposure and melatonin supplementation to improve sleep quality and cognitive performance—may mitigate circadian disruption and occupational fatigue. Conclusions: Burnout should be recognized as a biopsychosocial syndrome with measurable chronobiological correlates. Future research should integrate circadian biomarkers into occupational health assessments and evaluate preventive strategies aimed at preserving circadian health in healthcare professionals.
How strong is the evidence?
Evidence Hub reads this as a systematic review. Its evidence level is 1 of 5 (Highest · pooled evidence). Pooled evidence from several studies sits at the top of the evidence pyramid.
Read the paper
Related studies
- Tryptophan Metabolism and Gut-Brain Homeostasis
- Rationale for a Multi-Factorial Approach for the Reversal of Cognitive Decline in Alzheimer’s Disease and MCI: A Review
- Prioritized Research for the Prevention, Treatment, and Reversal of Chronic Disease: Recommendations From the Lifestyle Medicine Research Summit
- Relationship between sleep disorders and gut dysbiosis: what affects what?
- The role of CLOCK gene in psychiatric disorders: Evidence from human and animal research
- Genetic, Transcriptome, Proteomic, and Epidemiological Evidence for Blood-Brain Barrier Disruption and Polymicrobial Brain Invasion as Determinant Factors in Alzheimer’s Disease
Go deeper in Evidence Hub
Evidence Hub adds a study data sheet (design, sample size, evidence level, key numbers), an AI summary and a chat grounded in the paper's text.