Suffering a head injury just once in your life increases the risk of developing dementia by 25 per cent, a study has found.
People with a history of more blows to the cranium are at even greater risk, with two or more head injuries more than doubling the risk of dementia within 25 years.
Women are also more susceptible than men to developing Alzheimer’s following a brain injury, and white people are more at risk than black people, data shows.
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