It curdles the spine to hear player after player talk on film to Dorsey Levens about the number of concussions they had in football, and the headaches, mood swings, loss of memory, and the fear that they are already losing their minds. What was striking was that these were not players from the distant past of grainy black and white NFL Films who were talking, not like, for example, the great lineman Alex Karras, who died last week at 77 with dementia.
Unlimited access to BostonGlobe.com for only 99 cents for the first 4 weeks.Sign up
Are you a home delivery subscriber?
Get FREE access as part of your print subscriptionStart Here
Contact us for help