Moral injury is the social, psychological, and spiritual harm that arises from a betrayal of one’s core values, such as justice, fairness, and loyalty. Harming others, whether in military or civilian life; failing to protect others, through error or inaction; and failure to be protected by leaders, especially in combat—can all wound a person’s conscience , leading to lasting anger , guilt , and sh
Why Does Moral Injury Develop?
Understanding what causes moral injury is essential for prevention and treatment. Research consistently shows that moral injury arises from a complex interplay of biological, psychological, and social factors — rarely from a single cause.
What Researchers Have Found
Research into moral injury has identified multiple contributing pathways. Studies using neuroimaging, genetics, and longitudinal data reveal that no single factor fully explains why moral injury develops.
Biological Factors
Biological contributors to moral injury include:
- Genetics: Family history increases risk; certain genes influence vulnerability
- Brain chemistry: Neurotransmitter imbalances (serotonin, dopamine, norepinephrine) play key roles
- Brain structure: Differences in the prefrontal cortex, amygdala, and hippocampus are documented
- Physical health: Chronic illness, hormonal changes, and sleep disruption can trigger or worsen moral injury
Psychological Factors
- Early experiences: Childhood adversity, attachment disruption, and trauma shape psychological vulnerability
- Cognitive patterns: Negative thinking styles, perfectionism, and rumination increase risk
- Coping skills: Limited emotional regulation skills make moral injury more likely under stress
- Personality: Certain traits (neuroticism, harm avoidance) are associated with higher risk
Social and Environmental Factors
Environmental factors — including chronic stress, relationship problems, financial difficulty, and major life events — can trigger moral injury in vulnerable individuals.
What Triggers an Episode?
Even in people with predisposing factors, moral injury often requires a triggering event:
- Major life transitions (job loss, relationship breakdown, bereavement)
- Prolonged stress without adequate recovery
- Substance use or withdrawal
- Physical illness or injury
- Social isolation or conflict
Protective Factors
Not everyone with risk factors develops moral injury. Protective factors include: strong social support, effective coping skills, physical health maintenance, access to care, and psychological resilience built through prior challenges.