A study was recently conducted by various veteran, psychiatry and other health organizations out of San Francisco, regarding the correlation between TBIs (particularly mild ones), and the likelihood they have on the onset of dementia.

Their conclusion reads as such:

In this cohort study of more than 350 000 veterans, even mild TBI without LOC was associated with more than a 2-fold increase in the risk of dementia diagnosis. Studies of strategies to determine mechanisms, prevention, and treatment of TBI-related dementia in veterans are urgently needed.”

TBIs are an emerging science, and the ability to document combat TBIs upon their onset, keep track of their symptoms as they either progress or begin to heal, and record all relevant data — these steps have all been refined over the last couple of decades during the Global War on Terror, though there is still a long ways to go.