Association of Coffee Consumption and Prediagnostic Caffeine Metabolites With Incident Parkinson Disease in a Population-Based Cohort (2024 Mar 21) https://pmc.ncbi.nlm.nih.gov/articles/PMC11175631/ There is a strong inverse relationship between caffeine and the risk of Parkinson's https://www.chip.de/news/Parkinson-Risiko-senken-Dieses-Getraenk-reduziert-es-um-40-Prozent_185698906.html