Bang to Rights: Science is taking big steps toward understanding the impact of concussion

From The Economist:

FRED McNEILL, an American-football player, died in November at the age of 63. Between 1974 and 1985 he appeared for the Minnesota Vikings. After leaving them he became a lawyer but in later years suffered from dementia and was told that he had signs of chronic traumatic encephalopathy (CTE), a degenerative brain disease. His recent death has become a milestone in the understanding of brain disorders, for post-mortem examination has confirmed this diagnosis—retrospectively making him the first person to be so diagnosed while alive.

And:

Suffer the little children

In the end, adult athletes can make up their own minds about what risks they wish to take. Children, though, cannot. It is therefore children who should attract the greatest attention. Not only are some children obliged to play contact sports at school, but they may also be participating in an environment that encourages a “stiff upper lip” when they are injured. Yet it has been clear since a study published in 2012 by Andrew Mayer at the University of New Mexico in Albuquerque that subtle brain changes in children who have sustained a concussion persist for months after the injury, even when there are no longer any obvious symptoms.

Work published last December by Charles Hillman of the University of Illinois found that children who had sustained a single sports-related concussion still had impaired brain function two years later. Ten-year-olds with a history of concussion performed worse on tests of working memory, attention and impulse control than did uninjured confrères. Among the children with a history of concussion, those who were injured earlier in life had larger deficits. This study was small (it involved 15 injured participants) but if subsequent research confirms it, that will be great cause for concern.

Concussion—once an invisible injury—is rapidly being illuminated. Many sports-lovers have been disturbed to learn that injuries on the field have caused their heroes to undergo profound personality changes. And many parents now worry, with good reason, about their children playing sports. Taking one for the team is all very well. But the price of doing so may be paid over a lifetime.

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