This meta-analysis investigates the impact of alcohol consumption on the day of traumatic brain injury (TBI) on cognitive, psychological, and medical outcomes. It found that individuals with alcohol in their system at the time of injury (positive blood alcohol level) generally performed slightly worse on cognitive tests and showed subtle memory impairments. However, psychological and functional outcomes such as mortality rates and hospital stays were not significantly affected. The findings highlight alcohol's complex role in TBI outcomes, with both protective and harmful effects suggested.
Limit alcohol intake to reduce the risk of traumatic brain injuries and their potential adverse cognitive effects. While alcohol's impact on outcomes was mild, preexisting health factors, injury severity, and alcohol tolerance complicate its role. Adopting healthier habits, such as moderation, provides broader health benefits.