Abstract
BACKGROUND AND OBJECTIVES: Inverse associations between caffeine intake and Parkinson disease (PD) have been frequently implicated in human studies. However, no studies have quantified biomarkers of caffeine intake years before PD onset and investigated whether and which caffeine metabolites are related to PD.
METHODS: Associations between self-reported total coffee consumption and future PD risk were examined in the EPIC4PD study, a prospective population-based cohort including 6 European countries. Cases with PD were identified through medical records and reviewed by expert neurologists. Hazard ratios (HRs) and 95% CIs for coffee consumption and PD incidence were estimated using Cox proportional hazards models. A case-control study nested within the EPIC4PD was conducted, recruiting cases with incident PD and matching each case with a control by age, sex, study center, and fasting status at blood collection. Caffeine metabolites were quantified by high-resolution mass spectrometry in baseline collected plasma samples. Using conditional logistic regression models, odds ratios (ORs) and 95% CIs were estimated for caffeine metabolites and PD risk.
RESULTS: In the EPIC4PD cohort (comprising 184,024 individuals), the multivariable-adjusted HR comparing the highest coffee intake with nonconsumers was 0.63 (95% CI 0.46-0.88, p = 0.006). In the nested case-control study, which included 351 cases with incident PD and 351 matched controls, prediagnostic caffeine and its primary metabolites, paraxanthine and theophylline, were inversely associated with PD risk. The ORs were 0.80 (95% CI 0.67-0.95, p = 0.009), 0.82 (95% CI 0.69-0.96, p = 0.015), and 0.78 (95% CI 0.65-0.93, p = 0.005), respectively. Adjusting for smoking and alcohol consumption did not substantially change these results.
DISCUSSION: This study demonstrates that the neuroprotection of coffee on PD is attributed to caffeine and its metabolites by detailed quantification of plasma caffeine and its metabolites years before diagnosis.
Original language | English |
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Article number | e209201 |
Pages (from-to) | 1-12 |
Number of pages | 12 |
Journal | Neurology |
Volume | 102 |
Issue number | 8 |
DOIs | |
Publication status | Published - 23 Apr 2024 |
Bibliographical note
Publisher Copyright:© 2024 The Author(s).
Funding
The coordination of EPIC is financially supported by International Agency for Research on Cancer (IARC) and by the Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, which has additional infrastructure support provided by the NIHR Imperial Biomedical Research Centre (BRC). The authors thank all the participants who have been part of the project. The authors also thank Lars Forsgren from EPIC-Umea for reviewing the manuscript. The national cohorts are funded by Danish Cancer Society (Denmark); Ligue Contre le Cancer, Institut Gustave Roussy, Mutuelle Generale de l'Education Nationale, and Institut National de la Sante et de la Recherche Medicale (INSERM) (France); German Cancer Aid, German Cancer Research Center (DKFZ), German Institute of Human Nutrition Potsdam-Rehbruecke (DifE), and Federal Ministry of Education and Research (BMBF) (Germany); Associazione Italiana per la Ricerca sul Cancro-AIRC-Italy, Compagnia di SanPaolo, and National Research Council (Italy); Dutch Ministry of Public Health, Welfare and Sports (VWS), National Institute for Public Health and the Environment (RIVM), Netherlands Cancer Registry (NKR), LK Research Funds, Dutch Prevention Funds, Dutch ZON (Zorg Onderzoek Nederland), World Cancer Research Fund (WCRF), and Statistics Netherlands (The Netherlands); Health Research Fund (FIS)-Instituto de Salud Carlos III (ISCIII), Regional Governments of Andalucia, Asturias, Basque Country, Murcia and Navarra, and the Catalan Institute of Oncology-ICO, CERCA Program/Generalitat de Catalunya for the institutional support to IDIBELL (Spain); Swedish Cancer Society, Swedish Research Council, and County Councils of Skane and Vasterbotten (Sweden); and Cancer Research UK (C864/A14136 to EPIC-Norfolk; C8221/A29017 to EPIC-Oxford), Medical Research Council (MR/N003284/1, MC-UU_12015/1 and MC_UU_00006/1 to EPIC-Norfolk; MR/M012190/1 to EPIC-Oxford), University of Cambridge (United Kingdom).
Funders | Funder number |
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International Agency for Research on Cancer (IARC) | |
Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London | C864/A14136 |
NIHR Imperial Biomedical Research Centre (BRC) - Danish Cancer Society (Denmark) | |
Ligue Contre le Cancer | C8221/A29017 |
Institut Gustave Roussy | MR/N003284/1 |
German Cancer Aid |
Keywords
- Caffeine/metabolism
- Case-Control Studies
- Coffee
- Humans
- Parkinson Disease/diagnosis
- Prospective Studies
- Risk Factors