Head trauma may have contributed to Ali's Parkinson's
Muhammad Ali died Friday with the Parkinson’s disease that helped define his life for the last 32 years. Boxing may have contributed to his illness, but genetics was likely a bigger factor, experts said. “It’s bad luck on top of genetics,” said Ole Isacson, a professor of neurology at Harvard Medical School who met Ali several times. People who lose consciousness through head trauma are at 50% higher risk of Parkinson’s than those who don’t, he said. Ali’s symptoms and the co
