Mental Health Impacts of Nuclear Disasters

The mental health sequelae of nuclear accidents encompass acute, mid-term and long-term effects including elevated levels of anxiety, depression, post-traumatic stress and disturbances in risk perception among affected populations. Following exposure to ionising radiation and associated displacement or disruption, individuals often manifest heightened concern about immediate, delayed and hereditary health outcomes. This is compounded by loss of community cohesion, stigma and uncertainty in official communications. Evacuation and separation from familiar environments precipitate feelings of grief, helplessness and bereavement. Vulnerable subgroups—such as mothers with young children, evacuees in high-contamination zones and on-site workers—tend to exhibit more pronounced psychological distress. Cognitive biases, media framing and distrust in authorities can amplify fears and contribute to risk overestimation. Effective psychosocial interventions hinge on transparent risk communication, community engagement and the restoration of social support networks. Cross-disciplinary approaches integrating epidemiology, behavioural science and health literacy are critical to mitigate enduring psychological harm and to foster resilience in post-accident recovery phases.

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Mental Health Impacts of Nuclear Disasters publication trend

The graph below shows the total number of articles in mental health impacts of nuclear disasters across all publications each year (not limited to Nature Index journals).

Technical terms

Risk perception: The subjective judgement about the severity and probability of harm resulting from radiation exposure.

Psychological distress: A state of emotional suffering typically characterised by symptoms of depression and anxiety.

Kessler 6-item scale (K6): A screening tool to measure non-specific psychological distress in population surveys.

Post-traumatic stress responses: Psychological reactions following exposure to a traumatic event, including intrusive thoughts and heightened arousal.

Health literacy: The capacity to access, understand and use health information to make informed decisions.

References

1. Risk Perception and Anxiety Regarding Radiation after the 2011 Fukushima Nuclear Power Plant Accident: A Systematic Qualitative Review. International Journal of Environmental Research and Public Health (2017).
2. Severe Psychological Distress of Evacuees in Evacuation Zone Caused by the Fukushima Daiichi Nuclear Power Plant Accident: The Fukushima Health Management Survey. PLOS ONE (2016).
3. Immediate effects of the Fukushima nuclear power plant disaster on depressive symptoms among mothers with infants: a prefectural-wide cross-sectional study from the Fukushima Health Management Survey. BMC Psychiatry (2015).
4. The Relationship between Media Consumption and Health-Related Anxieties after the Fukushima Daiichi Nuclear Disaster. PLOS ONE (2013).
5. Associations between Disaster Exposures, Peritraumatic Distress, and Posttraumatic Stress Responses in Fukushima Nuclear Plant Workers following the 2011 Nuclear Accident: The Fukushima NEWS Project Study. PLOS ONE (2014).
6. Lingering health-related anxiety about radiation among Fukushima residents as correlated with media information following the accident at Fukushima Daiichi Nuclear Power Plant. PLOS ONE (2019).
7. Association between Health Literacy and Radiation Anxiety among Residents after a Nuclear Accident: Comparison between Evacuated and Non-Evacuated Areas. International Journal of Environmental Research and Public Health (2018).