Genetic and Epigenetic Factors Associated with Burnout Syndrome: A Comprehensive Review

Burnout syndrome is increasingly recognized as a significant occupational health issue, characterized by emotional exhaustion, depersonalization, and a reduced sense of personal accomplishment. It predominantly arises from chronic work-related stress, but recent research has highlighted the role of genetic and epigenetic factors in determining individual vulnerability to burnout. This review aims to synthesize findings regarding the genetic footprints of burnout, focusing on genes related to stress regulation, including the 5-HTT (serotonin transporter) gene, BDNF (brain-derived neurotrophic factor) gene, and NR3C1 (glucocorticoid receptor) gene. Twin studies reveal that burnout is moderately heritable, with genetic factors accounting for 33–36% of the variability in burnout-related traits, such as emotional exhaustion and performance-based self-esteem. However, burnout risk seems highly driven by non-shared environmental factors, such as work stress, lack of social support, and personal coping mechanisms. Specific genetic polymorphisms in the serotonergic system (5-HTT) and HPA axis genes (NR3C1, FKBP5) have been linked to increased burnout susceptibility, particularly in individuals exposed to chronic job strain or early-life stressful situations. Variations in 5-HTT rs6354 and HTR2A rs6313 are associated with altered stress reactivity, while polymorphisms in NR3C1 and FKBP5 contribute to dysregulation of the HPA axis, which influences cortisol secretion patterns in response to stress. Increased methylation in genes like BDNF and SLC6A4 has been observed in individuals with burnout, suggesting that environmental stressors may lead to lasting changes in gene expression, contributing to the syndrome’s development. Studies on telomere length have shown that burnout is associated with accelerated cellular aging, with individuals exhibiting shorter telomeres, particularly during high-stress periods. These findings hold particular relevance for professionals within the forensic and justice systems, including law enforcement, the judiciary, and forensic experts, who operate under chronic, high-stakes stress. We examine how understanding the biological basis of burnout can inform more objective ‘fitness-for-duty’ evaluations and provide a scientific framework for distinguishing physiological exhaustion from professional negligence in legal contexts.