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Title: Empirically derived dietary patterns and health-related quality of life in the SUN Project
Authors: Ruano-Rodríguez, Cristina 
Henríquez Sánchez, Patricia 
Martínez-González, Miguel Ángel
Bes-Rastrollo, Maira
Ruiz-Canela, Miguel
Sánchez-Villegas, Almudena 
UNESCO Clasification: 3206 Ciencias de la nutrición
Keywords: Quality of life
Dietary patterns
Issue Date: 2013
Journal: PLoS ONE 
Abstract: Objective: The analysis of dietary patterns has become a valuable tool to examine diet-disease relationships but little is known about their effects on quality of life. Our aim was to ascertain the association between major dietary patterns and mental and physical quality of life after 4 years of follow-up.Materials and Methods: This analysis included 11,128 participants from the "Seguimiento Universidad de Navarra'' (SUN) cohort. Dietary habits were assessed using a validated food-frequency questionnaire. Factor analysis was used to derive dietary patterns. Quality of life was measured with the validated Spanish version of the SF-36 Health Survey.Results: Two major dietary patterns were identified, the 'Western' dietary pattern (rich in red meats, processed pastries and fast-food) and the "Mediterranean'' dietary pattern (high in fruits, vegetables and olive oil). After controlling for confounders, the Western dietary pattern was associated with quality of life in all domains. The magnitude of these differences between the subjects in the highest (quintile 5) and the lowest quintile of adherence to the Western pattern ranged from 20.8 (for mental health) to 23.5 (for vitality). On the contrary, the Mediterranean dietary pattern was associated with better quality of life domains: differences ranged from + 1.3 (for physical functioning) to + 3.4 (for vitality) when comparing extreme quintiles of adherence. Additional sensitivity analyses did not change the reported differences.Conclusions: Whereas baseline adherence to a Western dietary pattern was inversely associated with self-perceived quality of life after 4 years of follow-up, baseline adherence to a Mediterranean dietary pattern was directly associated with better scores in quality of life four years later in the SUN Project.
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0061490
Source: PLoS ONE [ISSN 1932-6203], v. 8 (5) : e61490
Rights: by-nc-nd
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