Rugby players and long-term effects of concussion on brain function

The decision earlier this year by retired rugby league player James McManus to sue his former club over its concussion policies sent shockwaves through the sport.Now, a first-of-its-kind study of retired NRL players could further change the way we think about concussion. As SBS World News Radio: Darren Mara reports, it's revealed a range of brain impairments which can manifest later in life.