“Even mild traumatic brain injuries that do not result in loss of consciousness might have long-term neurodegenerative consequences.”
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Barnes DE, Byers AL, Gardner RC, Seal KH, Boscardin WJ, Yaffe K. Association of Mild Traumatic Brain Injury With and Without Loss of Consciousness With Dementia in US Military Veterans. JAMA Neurol. 2018 Sep 1;75(9):1055-1061. doi: 10.1001/jamaneurol.2018.0815. PMID: 29801145; PMCID: PMC6143113.