I've posted a link on my Facebook site to Malcolm Gladwell's article about football players and dementia - and dog fighting. I wouldn't have read it if it hadn't been by Gladwell, or probably if it hadn't been in the New Yorker, but I found it very interesting. The link with dogfighting is basically with dogfighting you know living beings are going to get hurt/killed; and with football it is becoming obvious that that is also the case. And then he goes into lengthy discussion of how examining the brains of football players, all ages, is leading to a discovery of the tau in almost every brain, whether or not dementia had been identified, and that it leads to not Az but CTE, Chronic Traumatic Encephalopathy, which is "a progressive neurological disorder found in people who have suffered some kind of brain trauma... has many of the same manifestations as Alzheimers"