European Journal of Epidemiology

, Volume 16, Issue 4, pp 357–363 | Cite as

Intake of flavonoids and risk of dementia

  • D. Commenges
  • V. Scotet
  • S. Renaud
  • H. Jacqmin-Gadda
  • P. Barberger-Gateau
  • J.-F. Dartigues
Article

Abstract

It has been postulated that oxidative stress may play a key role in dementia. This is substantiated by the recent discovery of the protective effect of wine. In wine, the flavonoids – powerful antioxidant substances also contained in tea, fruits and vegetables – have been thought to offer such protection. We investigated whether flavonoid intake could be associated with a lower incidence of dementia in a cohort of 1367 subjects above 65 years of age (Paquid). A questionnaire was used to evaluate their intake of flavonoids and subjects were followed-up for 5 years between 1991 and 1996: 66 incident cases of dementia were observed. We estimated the relative risk (RR) of dementia according to tertiles of flavonoid intake using a Cox model. The age-adjusted RR of dementia was 0.55 for the two highest tertiles compared to the lowest (95% CI: 0.34–0.90; p = 0.02). After additional adjustment for gender, education, weight and vitamin C intake, the RR was 0.49 (95% CI: 0.26–0.92; p = 0.04). We conclude that the intake of antioxidant flavonoids is inversely related to the risk of incident dementia.

Alzheimer's disease Dementia Flavonoids Vitamin C 

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Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • D. Commenges
    • 1
  • V. Scotet
    • 1
  • S. Renaud
    • 1
  • H. Jacqmin-Gadda
    • 1
  • P. Barberger-Gateau
    • 1
  • J.-F. Dartigues
    • 1
  1. 1.Institut National de la Santé et de la Recherche Médicale U330Bordeaux cedexFrance

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