Mental Health Impact of Epidemics and Stressors

Epidemics and associated stressors exert profound effects on mental health across diverse populations. Acute infectious outbreaks trigger widespread anxiety and depression through fear of contagion, social isolation and disruption of daily routines. Concurrent socio-economic crises—such as economic collapse, political instability or natural disasters—amplify these psychological burdens, leading to elevated rates of post-traumatic stress disorder (PTSD), sleep disturbances and emotional exhaustion. Health-care workers and first responders, subjected to intense workloads, moral dilemmas and prolonged exposure to suffering, often experience work fatigue that manifests physically, mentally and emotionally. Vulnerable groups, including students and older adults, may face compounded risks due to limited resources, disrupted support networks and pre-existing health conditions. Research increasingly emphasises the role of protective factors—such as quality sleep, gratitude practices and adaptive coping strategies—in moderating distress. A comprehensive approach that integrates psychosocial interventions, institutional support and public-health measures is essential to bolster resilience, ensure equitable access to mental-health services and mitigate the long-term repercussions of global health emergencies.

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Mental Health Impact of Epidemics and Stressors publication trend

The graph below shows the total number of articles in mental health impact of epidemics and stressors across all publications each year (not limited to Nature Index journals).

Technical terms

Post-traumatic stress disorder (PTSD): A mental health condition developing after exposure to traumatic events, characterised by intrusive memories, avoidance behaviours, negative alterations in mood and heightened arousal.

Work fatigue: A multidimensional state of physical, mental and emotional exhaustion resulting from sustained work demands, often intensified in high-pressure contexts such as healthcare during epidemics.

Avoidant coping: A coping strategy involving deliberate efforts to evade confronting stressors or emotional responses, which can perpetuate distress and hinder adaptive adjustment.

References

1. Work fatigue among Lebanese physicians and students during the COVID-19 pandemic: validation of the 3D-Work Fatigue Inventory (3D-WFI) and correlates. BMC Public Health (2022).
2. Rate and correlates of post-traumatic stress disorder (PTSD) following the Beirut blast and the economic crisis among Lebanese University students: a cross-sectional study. BMC Psychiatry (2022).
3. The psychological impact of COVID-19 in a socio-politically unstable environment: protective effects of sleep and gratitude in Lebanese adults. BMC Psychology (2023).