Moral Injury, Substance Use, and Posttraumatic Stress Disorder Symptoms Among Military Personnel: An Examination of Trait Mindfulness as a Moderator.

Mindfulness-based approaches have been suggested as possible methods to treat moral injury in military personnel. However, empirical research has yet to evaluate if mindfulness acts as a protective factor for the possible negative effects of moral injury, such as alcohol use, drug use, or posttraumatic stress disorder (PTSD) symptoms. In this study, we investigated if five facets of mindfulness (i.e., observing, nonjudging, nonreactivity, awareness, and describing) moderated associations between moral injury and the outcomes of PTSD symptoms, alcohol misuse, and drug abuse symptoms in a sample of military personnel. Participants were 244 military personnel (the majority were former military members) who had been deployed at least once during the Iraq War, War in Afghanistan, other wars, or humanitarian missions. The study results indicated that nonjudging, β = -.22, and awareness, β = -.25, had significant attenuating effects on the association between moral injury and drug abuse symptoms. However, observing, β = .17; nonreactivity, β = .23; and describing, β = .15, had significant synergistic effects (i.e., they strengthened the association between moral injury and drug abuse symptoms). There were no significant moderation effects on the associations between moral injury and PTSD symptoms or between moral injury and alcohol misuse. Our results provide initial evidence that not all facets of mindfulness may protect against the challenges of coping with moral injury. Directions for future research and implications for practice are discussed.