Researchers studied 2,133 patients with autopsy-confirmed Alzheimer's disease and found that those who had experienced traumatic brain injury and loss of consciousness for at least five minutes had Alzheimer's symptom onset around two years earlier in age and received a dementia diagnosis almost three years earlier in age, compared with those who didn't have TBI. The findings in the journal Neuropsychology also showed a 3.6-year earlier Alzheimer's onset and dementia diagnosis among those with TBI and LOC when stricter neuropathological criteria were used.
Study ties TBI with earlier Alzheimer's disease onset
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