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An individual who experiences traumatic mind accidents is extra more likely to develop dementia – even a long time later, in accordance with a brand new examine.

The examine, revealed Tuesday within the journal The Lancet Psychiatry, examined almost 2.eight million folks in Denmark, following them over 36 years. It discovered that individuals who had skilled a traumatic mind damage had a 24 per cent increased threat of being identified with dementia than those that had by no means skilled such an damage.

The threat elevated with the variety of accidents, mentioned examine co-author Jesse Fann, a professor within the division of psychiatry and behavioural sciences on the University of Washington School of Medicine.

“There was a clear pattern between the number of brain injuries a person has and their risk of dementia as well as the severity of the brain injury and their subsequent risk of dementia,” he mentioned.


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Because the examine was carried out over three a long time, it was in a position to seize individuals who skilled a traumatic mind damage of their 20s, and see whether or not they have been identified with dementia by their 50s. It discovered that individuals with a TBI of their 20s have been about 63 per cent extra more likely to develop dementia 30 years later than individuals who didn’t get a TBI of their 20s.

“The absolute risk of dementia when a person is in their 50s is still very low. But there was an increased risk,” mentioned Fann.

“This is a solid research study with an impressively large cohort,” mentioned Dr. Tom Schweizer, director of the Neuroscience Research Program at St. Michael’s Hospital in Toronto in an emailed assertion.

“This study provides compelling evidence of a link between TBI and dementia, that goes beyond typical studies focusing on professional athletes in contact sports (e.g., football), to include a broader representation of the general public.”

The examine solely included individuals who have been identified with traumatic mind accidents in hospitals, that means that individuals who had milder circumstances and have been identified by a major care doctor wouldn’t have been counted.


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That implies that it’s troublesome to use these findings on to many sports activities accidents, mentioned Michael Hutchison, director of the concussion program on the David L. MacIntosh Sport Medicine Clinic on the University of Toronto.

It’s comparatively uncommon that athletes lose consciousness after they hit their head, and their accidents are typically much less extreme, he mentioned. However, he thinks that this examine’s findings point out a necessity for additional analysis particular to sports activities. “They should try to emulate or repeat this type of design in their own environment,” he mentioned.

With that mentioned, “Getting hit in the head is probably not a good thing.”

A rising physique of analysis is displaying plenty of issues associated to those sorts of accidents, and so, it’s cheap to take common sense precautions and never interact in dangerous behaviour, he mentioned.


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The outcomes of this examine, which present that older persons are particularly susceptible to growing dementia inside the first yr of a traumatic mind damage, recommend “it is important to evaluate policy and patient management during this time,” mentioned Schweizer. Similarly, extra analysis must be executed on the best way to cut back the dangers in youthful sufferers, who’re additionally more likely to develop dementia.

Fann believes that work on issues like helmets and visitors security to forestall accidents within the first place ought to proceed. As nicely, there must be extra analysis on the best way to assist individuals who have already skilled an damage.

“If a person has had a brain injury they may want to pay particular attention to other known risk factors for dementia,” he mentioned. Things like weight problems and alcohol or tobacco use could be modified, decreasing an individual’s total threat.

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Note: “Previously Published on: 2018-04-11 14:40:56, as ‘Traumatic mind accidents improve your threat of dementia later in life: examine – National

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