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Traumatic brain injury raises dementia risk, large study suggests

BMJ 2018; 361 doi: (Published 11 April 2018) Cite this as: BMJ 2018;361:k1597
  1. Ingrid Torjesen
  1. London

People who have sustained a traumatic brain injury have a higher risk of developing dementia and Alzheimer’s disease, a nationwide population cohort study suggests.

Published in the Lancet Psychiatry,1 the study is one of the first to have a sufficient sample size and follow-up time to assess the effects of traumatic brain injury.

It includes data on 2 794 852 people living in Denmark on 1 January 1995 who were aged at least 50 at some point in the follow-up period (1999-2013). Registries were used to identify people who had sustained a …

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