Certain PTSD symptoms in military reservists linked to hazardous drinking

Predicted margins of alcohol-related problems by hyperarousal symptoms and sex across five study waves, adjusted for time, anxiety, and depression. Credit: Alcohol: Clinical and Experimental Research (2026). DOI: 10.1111/acer.70211

Some symptoms of post-traumatic stress disorder are more strongly associated with drinking problems in U.S. National Guard and military reserve members, even when other symptoms are more severe overall. Symptoms of hyperarousal in PTSD may particularly increase the likelihood of alcohol problems, as do avoidance and negative mood and thinking, according to a study published in Alcohol: Clinical and Experimental Research. The findings highlight the need for symptom-specific strategies to support military reservists in obtaining treatment for mental health and substance use issues.

The current study followed 500 National Guard and Army reserve members over five years to discover how different PTSD symptoms relate to hazardous drinking behaviors, specifically, consumption, dependence, and alcohol-related problems. Four distinct clusters of symptoms characterize PTSD: re-experiencing the traumatic event through intrusive thoughts and flashbacks; avoidance of reminders of the trauma, which can lead to isolation; negative thoughts and mood, which involve persistent negative beliefs and feelings of detachment; and hyperarousal, which includes irritability, hypervigilance, and sleep disturbances.

Hyperarousal appeared to be the most significant symptom driving the association between PTSD and alcohol-related problems. Greater hyperarousal was associated with increased alcohol consumption for both male and female soldiers and with alcohol problems for male soldiers but not female soldiers. Symptoms of avoidance, negative cognitions, and mood were each also associated with alcohol problems. Symptoms of re-experiencing trauma were not associated with any domains of hazardous drinking.

There were no sex differences in total PTSD symptom burden, although female soldiers reported significantly higher scores on avoidance and negative cognitions and mood. Male soldiers had higher levels of alcohol consumption and dependence compared to female soldiers, similar to other military populations.

Military reservists are at higher risk for problems with mental health and substance use, and often have less access to treatment and support than their full-time active-duty counterparts. Although they comprise more than one-third of the U.S. military, there have been few studies of this population, particularly related to PTSD and high-risk drinking.

The study suggests that understanding the individual symptoms behind a PTSD diagnosis can help clinicians identify soldiers at higher risk of developing alcohol-related problems and offer interventions that more effectively address their mental health needs.