Ex-Boxer's Doctor Queries Parkinson's Link

Muhammad Ali's doctor claims that the boxing great's remarkable career in the ring could not have contributed to the former champion's Parkinson's Disease. It has long been asserted that the effect of taking punishing head blows in fights against the likes of George Foreman in the 'Rumble in the Jungle', whose 40th anniversary was celebrated this week, have been a key factor in Ali suffering from Parkinson's, a neurological condition which can cause its sufferers ...