He was one of the NFL’s most feared runners. Now Larry Johnson fears what football did to his brain

Once among the NFL’s most punishing running backs, Larry Johnson opens up about memory loss, intrusive thoughts and his fears over football’s lasting toll In his heyday, Larry Johnson was the NFL tailback you’d least want to line up against, the steamroller in pads who had defensive players and coaches questioning their life choices on every down.

But since Johnson walked away from pro football in 2011, after seven seasons in the league and an All-Pro run with the Kansas City Chiefs, he’s the one doing the soul-searching, grappling with the toll all that gridiron glory has taken on his brain.…