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Minor bump on the head raises dementia risk

A KNOCK on the head can increase your risk of developing dementia in later life by about a sixth, a study shows.

The findings were revealed by researchers given access to the health records, stretching back 36 years, of 2.8million Danish people.

Suffering any traumatic brain injury was found to increase the likelihood of getting Alzheimer’s and other forms of dementia by nearly a quarter — 24 per cent. And even a relatively minor blow resulting in concussion was shown to raise the risk by 17 per cent.

Prof Jesse Fann, from the University of Washington in Seattle, said the heightened danger continues ‘decades after the injury’.

But she added: ‘It’s important to emphasise that the absolute risk increase is low.’