Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/18033
Title: Olive oil intake and risk of cardiovascular diseaseand mortality in the PREDIMED Study
Authors: Guasch-Ferré, Marta
Hu, Frank B.
Martínez-González, Miguel Ángel
Fitó, Montserrat
Bulló, Mónica
Estruch, Ramón
Ros, Emilio
Corella, Dolores
Recondo, Javier
Gómez-Gracia, Enrique
Fiol, Miquel
Lapetra, José
Serra-Majem, Luis 
Muñoz, Miguel-Angel
Pintó, Xavier
Lamuela-Raventós, Rosa Maria
Basora, Josep
Buil-Cosiales, Pilar
Sorlí, José V.
Ruiz-Gutiérrez, V.
Martínez, J. Alfredo
Salas-Salvadó, Jordi
UNESCO Clasification: 3206 Ciencias de la nutrición
Keywords: Mediterranean Diet
Olive oil
Cardiovascular
Mortality
PREDIMED
Issue Date: 2014
Journal: BMC Medicine 
Abstract: Background: It is unknown whether individuals at high cardiovascular risk sustain a benefit in cardiovascular disease from increased olive oil consumption. The aim was to assess the association between total olive oil intake, its varieties (extra virgin and common olive oil) and the risk of cardiovascular disease and mortality in a Mediterranean population at high cardiovascular risk.Methods: We included 7,216 men and women at high cardiovascular risk, aged 55 to 80 years, from the PREvención con DIeta MEDiterránea (PREDIMED) study, a multicenter, randomized, controlled, clinical trial. Participants were randomized to one of three interventions: Mediterranean Diets supplemented with nuts or extra-virgin olive oil, or a control low-fat diet. The present analysis was conducted as an observational prospective cohort study. The median follow-up was 4.8 years. Cardiovascular disease (stroke, myocardial infarction and cardiovascular death) and mortality were ascertained by medical records and National Death Index. Olive oil consumption was evaluated with validated food frequency questionnaires. Multivariate Cox proportional hazards and generalized estimating equations were used to assess the association between baseline and yearly repeated measurements of olive oil intake, cardiovascular disease and mortality.Results: During follow-up, 277 cardiovascular events and 323 deaths occurred. Participants in the highest energy-adjusted tertile of baseline total olive oil and extra-virgin olive oil consumption had 35% (HR: 0.65; 95% CI: 0.47 to 0.89) and 39% (HR: 0.61; 95% CI: 0.44 to 0.85) cardiovascular disease risk reduction, respectively, compared to the reference. Higher baseline total olive oil consumption was associated with 48% (HR: 0.52; 95% CI: 0.29 to 0.93) reduced risk of cardiovascular mortality. For each 10 g/d increase in extra-virgin olive oil consumption, cardiovascular disease and mortality risk decreased by 10% and 7%, respectively. No significant associations were found for cancer and all-cause mortality. The associations between cardiovascular events and extra virgin olive oil intake were significant in the Mediterranean diet intervention groups and not in the control group.Conclusions: Olive oil consumption, specifically the extra-virgin variety, is associated with reduced risks of cardiovascular disease and mortality in individuals at high cardiovascular risk.
URI: http://hdl.handle.net/10553/18033
ISSN: 1741-7015
DOI: 10.1186/1741-7015-12-78
Source: BMC Medicine [EISSN 1741-7015], v. 12 (1), e78, (Mayo 2014)
Rights: by-nc-nd
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