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Abstract
Objective: To determine whether high olive oil consumption, and high plasma oleic acid as an indirect biological marker of olive oil intake, are associated with lower incidence of stroke in older subjects.
Methods: Among participants from the Three-City Study with no history of stroke at baseline, we examined the association between olive oil consumption (main sample, n = 7,625) or plasma oleic acid (secondary sample, n = 1,245) and incidence of stroke (median follow-up 5.25 years), ascertained according to a diagnosis validated by an expert committee.
Results: In the main sample, 148 incident strokes occurred. After adjustment for sociodemographic and dietary variables, physical activity, body mass index, and risk factors for stroke, a lower incidence for stroke with higher olive oil use was observed (p for trend = 0.02). Compared to those who never used olive oil, those with intensive use had a 41%(95% confidence interval 6%–63%, p = 0.03) lower risk of stroke. In the secondary sample, 27 incident strokes occurred. After full adjustment, higher plasma oleic acid was associated with lower stroke incidence (p for trend = 0.03). Compared to those in the first tertile, participants in the third tertile of plasma oleic acid had a 73% (95% confidence interval 10%–92%, p = 0.03) reduction of stroke risk.
Conclusions: These results suggest a protective role for high olive oil consumption on the risk of stroke in older subjects.
GLOSSARY
- %3C Study=
- Three-City Study;
- BMI=
- body mass index;
- CI=
- confidence interval;
- HDL=
- high-density lipoprotein;
- HR=
- hazard ratio;
- MeDi=
- Mediterranean diet;
- MI=
- myocardial infarction;
- MUFA=
- monounsaturated fats
Footnotes
Study funding: The Three-City Study is conducted under a partnership agreement among the Institut National de la Santé et de la Recherche Médicale (INSERM), the Institut de Santé Publique et Développement of the Victor Segalen Bordeaux 2 University, and sanofi-aventis. The Fondation pour la Recherche Médicale funded the preparation and initiation of the study. The 3C Study is also supported by the Caisse Nationale Maladie des Travailleurs Salariés, Direction Générale de la Santé, Mutuelle Générale de l'Education Nationale, Institut de la Longévité, Regional Governments of Aquitaine and Bourgogne, Fondation de France, and Ministry of Research—INSERM Programme “Cohortes et Collections de Données Biologiques.” This work was carried out with the financial support of the “ANR: Agence Nationale de la Recherche [The French National Research Agency]” under the “Programme National de Recherche en Alimentation et Nutrition Humaine,” project COGINUT ANR-06-PNRA-005.
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Editorial, page 412.
- Received September 27, 2010.
- Accepted January 19, 2011.
- Copyright © 2011 by AAN Enterprises, Inc.
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- Olive oil and stroke: caution
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