However, upon gaining a Smith and Nephew fellowship, he went abroad for further studies under the direction of Henry Miller and John Walton, both eminent neurologists in Newcastle upon Tyne.

[7] After spending some time in Newcastle, he took a job at the National Hospital for Nervous Diseases, Queens Square, London before returning to Nigeria in 1965.

It was at the University of Ibadan he launched a productive career, working on neuro-epidemiology and clinical and investigative neurology especially the study of dementia among Nigerians and African Americans.

[7] In the late 1960s, he investigated cases of ataxic neuropathy in Epe where residents usually consume a dose of ill processed cassava with little or no supplement.

[2] The onset of neuropathy after ingestion of ill-processed Cassava, due to Cyanide Intoxication, is known as the Osuntokun's Sign, and is commonly used in African Medical Lectures and Bulletins, but is not much known to countries outside Africa.