Repeated head blows linked to smaller brain volume and slower processing speeds

What about children who engage in tackle football?

http://www.eurekalert.org/pub_releases/2015-01/bmj-rhb012815.php

Public Release: 29-Jan-2015
BMJ-British Medical Journal

Repeated blows to the head sustained during serial boxing or martial arts tournaments are linked to smaller volumes of certain parts of the brain and slower processing speeds, reveals research published online in the British Journal of Sports Medicine.

The researchers base their findings on 224 professional fighters (131 mixed martial arts fighters and 93 boxers), all of whom were taking part in the Professional Fighters Brain Health Study (PFBHS), and 22 people with no history of head trauma, but matched for age and educational attainment.

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