Hundreds of thousands of servicemembers suffer from traumatic brain injury (TBI), including from exposure to blasts from improvised explosive devices (IED).
Emerging evidence suggests that servicemembers may be exposed to high levels of blast overpressure (the pressure wave that comes from explosions) when firing heavy weapons, such as the Carl Gustaf recoilless rifle, even in training.
See the two studies below.
Protecting Warfighters from Blast Injuries
Weapons Training Likely Causes Brain Injury in Troops