

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...
Long-time
Health/Science
journalist.
Co-author "Born
in Cambridge."
Former USA TODAY
editor and reporter, and former freelancer,
contributing to The
New York Times, The Washington Post,
Scientific American.com, and others.
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