In an interview with the Washington Post, former NFL running back Larry Johnson talked of his violent tendencies, memory loss, anxiety and paranoia, saying those symptoms are consistent with former players who died from CTE.
Dale Earnhardt Jr. talked about his decision Friday to donate his brain for science, saying he is willing to do "anything I can do to help others."
The NFL has demanded that the New York Times retract a story saying the league omitted concussion cases, according to a report.
Four Congress members have asked the NFL for information about why it attempted to intervene in the selection of a Boston University researcher to lead a study on football and brain disease.
Cardinals coach Bruce Arians says people who won't let their kids play football "are fools."
NFL research intended to have a full account of diagnosed concussions from 1996 to 2001, but the data missed about 10 percent of concussions from that period, according to The New York Times.
