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January 06, 2021Article

Dietary antioxidants and the risk of Parkinson Disease

The Swedish National March Cohort

Essi Hantikainen, Ylva Trolle Lagerros, Weimin Ye, Mauro Serafini, Hans-Olov Adami, Rino Bellocco, Stephanie Bonn
First published January 6, 2021, DOI: https://doi.org/10.1212/WNL.0000000000011373
Essi Hantikainen
1Department of Statistics and Quantitative Methods, University of Milano-Bicocca, Milan, Italy
2Institute for Biomedicine, Eurac Research, Affiliated Institute of the University of Lübeck, Bolzano, Italy
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  • For correspondence: essimarjatta.hantikainen@eurac.edu
Ylva Trolle Lagerros
3Clinical Epidemiology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
4Obesity Center, Academic Specialist Center, Stockholm Health Services, Stockholm, Sweden
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  • For correspondence: ylva.trolle@ki.se
Weimin Ye
5Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
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  • For correspondence: weimin.ye@ki.se
Mauro Serafini
6Functional Food and Metabolic Stress Prevention Laboratory, Faculty of BioSciences and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
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  • For correspondence: mserafini@unite.it
Hans-Olov Adami
5Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
7Clinical Effectiveness Research Group, Institute of Health, University of Oslo, Oslo, Norway.
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  • For correspondence: hadami@hsph.harvard.edu
Rino Bellocco
1Department of Statistics and Quantitative Methods, University of Milano-Bicocca, Milan, Italy
5Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
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  • For correspondence: rino.bellocco@unimib.it
Stephanie Bonn
3Clinical Epidemiology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
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  • For correspondence: stephanie.bonn@ki.se
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Citation
Dietary antioxidants and the risk of Parkinson Disease
The Swedish National March Cohort
Essi Hantikainen, Ylva Trolle Lagerros, Weimin Ye, Mauro Serafini, Hans-Olov Adami, Rino Bellocco, Stephanie Bonn
Neurology Jan 2021, 10.1212/WNL.0000000000011373; DOI: 10.1212/WNL.0000000000011373

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Abstract

Objective To determine whether high baseline dietary antioxidants and total non-enzymatic antioxidant capacity (NEAC) is associated with a lower risk of Parkinson disease in men and women, we prospectively studied 43,865 men and women from a large Swedish cohort.

Methods In the Swedish National March Cohort 43,865 men and women aged 18–94 years were followed through record linkages to National Health Registries from 1997 until 2016. Baseline dietary vitamin E, C and beta-carotene intake, as well as NEAC, were assessed by a validated food frequency questionnaire collected at baseline. All exposure variables were adjusted for energy intake and categorized into tertiles. Multivariable Cox proportional hazard regression models were fitted to estimate hazard ratios (HRs) with 95% confidence intervals (CIs) for Parkinson disease.

Results After a mean follow-up time of 17.6 years we detected 465 incidence cases of Parkinson disease. In the multivariable adjusted model, dietary vitamin E (HR: 0.68: 95% CI: 0.52–0.90; p for trend: 0.005) and C (HR: 0.68; 95% CI: 0.52–0.89; p for trend: 0.004) were inversely associated with the risk of Parkinson disease, when comparing subjects in the highest to the lowest tertiles of the exposure. No association was found with estimated intake of dietary beta-carotene or NEAC.

Conclusion Our findings suggest that dietary vitamin E and C intake might be inversely associated with the risk of Parkinson disease. No association was found with dietary beta-carotene or NEAC.

Classification of evidence This study provides Class III evidence that dietary vitamin E and C intake are inversely associated with the risk of Parkinson disease.

  • Received June 22, 2020.
  • Accepted in final form October 5, 2020.
  • © 2021 American Academy of Neurology

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