1981
"Ali submitted to a series of tests two months ago at New York University under the supervision of Dr. Harry Demopoulos, a professor of pathology. Demopoulos said the tests, along with others administered at UCLA and the Mayo Clinic, included a CAT scan, neurological exams, electroencephalograms and blood checks.

Demopoulos said that 30 doctors were involved in the studies and that they all came to the same conclusion: "There's absolutely no evidence that Muhammad has sustained any injury to any vital organ—brain, liver, kidneys, heart, lungs—nervous system, or muscle or bone systems. His blood tests indicate he has the vessels of a young man."

And the slurring? "We think it's a psychosocial response," Demopoulos said. "If the slurring were due to permanent damage, it would be there all the time." It occurs under certain circumstances, Demopoulos said, such as when Ali is under stress or when he is fatigued. The Bahamian minister of sports, youth and community affairs, Kendel Nottage, approved the fight. "I was shown a number of medical reports, and they were satisfactory to me," Nottage said."

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