Here is an explainer about CTE -- the progressive brain disease that is at the center of a debate between retired athletes and multiple sports leagues.
In 2011, former Chicago Bears safety Dave Duerson, 50, shot himself in the chest, leaving a suicide note donating his brain to science. Boston University pathologists found lesions in Duerson’s brain.
No email address was supplied by
To complete your registration on this site, please supply an address.
Please confirm or modify the email address to which you will have subscription offers sent.
For a more personalized experience, please supply the following optional information.