Degenerative Brain Disease Found In Nearly All Donated NFL Player Brains, Says Study (npr.org)

A new study published Tuesday in the journal American Medical Association found that 110 out of 111 brains of those who played in the NFL had degenerative brain disease chronic traumatic encephalopathy (CTE). NPR reports: In the study, researchers examined the brains of 202 deceased former football players at all levels. Nearly 88 percent of all the brains, 177, had CTE. Three of 14 who had played only in high school had CTE, 48 of 53 college players, 9 of 14 semiprofessional players, and 7 of 8 Canadian Football League players. CTE was not found in the brains of two who played football before high school. According to the study's senior author, Dr. Ann McKee, "this is by far the largest [study] of individuals who developed CTE that has ever been described. And it only includes individuals who are exposed to head trauma by participation in football." A CTE study several years ago by McKee and her colleagues included football players and athletes from other collision sports such as hockey, soccer and rugby. It also examined the brains of military veterans who had suffered head injuries. The study released Tuesday is the continuation of a study that began eight years ago. In 2015, McKee and fellow researchers at the Department of Veterans Affairs and Boston University published study results revealing 87 of 91 former NFL players had CTE.

Comments

Re:Hmmmm

[rtb61]

Every single concussion comes with an extent of brain damaged aligned to the severity of the concussion, every single one https://www.brainline.org/arti.... The more concussions you suffer and the worse they are, the greater your accumulated brain damage. The reason you are concussed is because, yes you brain suffered sufficient impact to cause it harm, that is why you feel concussed. It's like never damaged, bruised nerves, means in those millions of nerve bundles some where broken, severed, ceased to function, resulting in diminished capacity, as for the brain. As different parts of the brain do different things, the direction of the impact has a significant impact on the outcome, some being much more dangerous than others. What probably saves jock straps from more behaviourally visible reduce cerebral function is smaller brains in thicker skulls, with fewer neuron connections and the types of activity they indulge in, not much mental function is required for the activity, in fact reduced mental function is desirable for repetitive training behaviours.

Re: Sample bias

[JoeRobe]

The BBC version of this story actually discusses the sample bias, and the director of the CTE center is quoted fully acknowledging that there's enormous bias.

http://www.bbc.com/news/world-...