Post-traumatic stress disorder as a risk factor for dementia: systematic review and meta-analysis Main link:

Review of 8 studies (n=1,693,678) found that post-traumatic stress disorder was associated with a significant risk for all-cause dementia (HR 1.61, 95%CI 1.46-1.78), however most studies were retrospective and there was evidence of high heterogeneity.

British Journal of Psychiatry