Association of life‐course traumatic brain injury with the risk of dementia: a nationwide twin study

Traumatic brain injury (TBI) in late‐life has been related to dementia, but the impact of life‐course TBI on dementia remains unclear.We aimed to examine the association between TBI occurring at different ages and dementia, and to explore the role of cardiometabolic diseases (CMDs) and genetic and early‐life environmental factors in this association.