We investigate the effects of concussion in sport. What if anything needs to be done to improve the safety of the sport stars we cheer on every week. How do you help athletes who want to play on regardless of the risks, and what responsibility for player's health do we have as fans?



We are joined by neurologist Dr Margaret Goodman. For many years she was a ringside physician in the home of boxing Las Vegas. She also served on the Nevada State Athletic Commission and chairs VADA, The Voluntary Anti-Doping Association. Shawne "lights Out" Merriman a former NFL star whose nickname comes from his propensity to knock other players out on the field. We'll also hear from former Rugby League player Rob Parker whose sporting injuries led to a painkiller addiction and Professor Tony Belli who is part of the team what introduced touchline concussion screening in rugby earlier this month.



Photo: Amir Khan stays down after a knockout from Canelo Alvarez (Credit: Getty Images)