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😈Prostaglandins Leukot Essent Fatty Acids. 2010 Jul 13. [Epub ahead of print]
Is marine mammal fat or fish intake most strongly associated with omega-3 blood levels among the Nunavik Inuit?
Lucas M, Proust F, Blanchet C, Ferland A, Déry S, Abdous B, Dewailly E.
Axe Santé des Populations et Environnement, Centre Hospitalier de l'Université Laval (CHUL-CHUQ), Delta Building #2 - Office 600, 2875 Laurier Blvd., 6th Floor, Que., Canada G1V 2M2.
Abstract
Here we determined the relationship between red blood cell (RBC) omega-3 (n-3) long-chain polyunsaturated fatty acids (LC-PUFAs) and usual dietary marine food product intake among 630 Nunavik Inuit adults. Marine food product intake was determined by a food frequency questionnaire (FFQ) and fatty acids were quantified in RBC membranes. Multiple linear regression was undertaken to determine the relationship between marine food product inatke and RBC n-3 LC-PUFAs (dependent variable). Mean RBC n-3 LC-PUFA level was 9.16+/-0.11% [SEM]. The highest correlations noted with RBC n-3 LC-PUFAs were for marine mammal fat (r(s)=0.41, P<0.0001) and fish (r(s)=0.35, P<0.0001). Age, total marine mammal fat and fish intakes were the variables that contributed the most to predicted RBC n-3 LC-PUFAs and explained 34%, 15% and 5%, respectively, of its variances. Our study indicates that marine mammal fat intake is more important than fish in accounting for RBC n-3 LC-PUFA levels among the Nunavik Inuit.