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Updated: Aug 6, 2025

Author Spotlight: Exploring Non-Motor Symptoms in Parkinson's Disease
Published on: September 22, 2023
Berlin Bowel Bothers: Might Adolf Hitler's Gut Problems Have Been Parkinson-Related?
Milan Beckers1,2, Peter J Koehler3, Geert J A Wanten4
1Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands.
Abstract:
It has been argued that Adolf Hitler (1889-1945) had Parkinson's disease. He also experienced several gastrointestinal symptoms, for which various explanations have been sought, both contemporaneously and by later authors. In this Historical Note, a possible relationship between Hitler's Parkinson's disease and his gastrointestinal symptoms is explored. Specifically, we posit the hypothesis that Hitler may have suffered from small-intestinal bacterial overgrowth (SIBO), thus providing an early example of SIBO occurring as a prodromal Parkinson's disease symptom.
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