The authors of the study, published in the peer-reviewed Acta Neuropathologica journal, said brain injuries are far more common in homeless people than in the general population, often from falls, assaults, or accidents. But they added that sometimes violent or aggressive behaviour among people experiencing homelessness may be not only a cause but also a consequence of underlying brain damage. In the CTE cases, the pattern of brain damage in memory-related regions differed from those seen in Alzheimer’s disease. Before this, similar CTE-related brain changes had been also documented in women in Australia subjected to domestic violence over a long period. The impact of brain injuries in contact sports has also cast a shadow over UK sport too.