title: Empirically derived dietary patterns and health-related quality of life in the SUN project.
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.
  
  
  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 -0.8 (for mental health) to -3.5 (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.
authors: Department of Clinical Sciences, University of Las Palmas de Gran Canaria, Las Palmas, Spain. cruano@proyinves.ulpgc.es
authors: Cristina
authors: C
authors: Ruano
authors: Patricia
authors: P
authors: Henriquez
authors: Miguel Ángel
authors: MÁ
authors: Martínez-González
authors: Maira
authors: M
authors: Bes-Rastrollo
authors: Miguel
authors: M
authors: Ruiz-Canela
authors: Almudena
authors: A
authors: Sánchez-Villegas
mesh_terms: D000328:Adult; D015331:Cohort Studies; D038441:Diet, Mediterranean; D036262:Empirical Research; D002149:Energy Intake; D005247:Feeding Behavior; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D011788:Quality of Life; D011795:Surveys and Questionnaires
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