Careers that expose individuals to repeated low-level shockwaves are associated with a slightly higher risk of clinically documented anger, aggression, and violence, according to research from University of Utah Health published on Jun. 18.
The study used artificial intelligence to analyze health records from 10,000 veterans and found that those who served in roles with higher risk of blast exposure were more likely to have raised concerns related to anger with their doctor. Less than 3% of clinical notes mentioned anger, aggression, or violence across both groups.
"Although the effect was moderate, our findings do suggest that long-term occupational blast exposure is a risk factor for anger, even independently of other military exposures," said Eamonn Kennedy, PhD, research assistant professor of epidemiology at University of Utah Health and first author on the study.
The study reported that 17% of veterans whose jobs were associated with a higher risk of blast exposure had anger and aggression later documented at any point in their clinical records. This compares to 12% among veterans whose jobs had a low risk of blast exposure. High-exposure roles include infantry, artillery, and weapons instructors—positions involving firing heavy weapons or being near explosions where shockwaves are generally not strong enough to cause immediate trauma such as concussion.
Kennedy said occupational exposure exists within "a network of numerous interplaying exposures and risks," including stress and psychiatric illness. The research suggests that reducing low-intensity blast exposure could help keep veterans healthy by lowering an additional burden for those already experiencing challenges.
"Occupational blast exposure is largely modifiable because it typically occurs during training...and that gives us access for reducing harm," Kennedy said. The results open the door for developing strategies aimed at minimizing negative health consequences while maintaining effective training.
