Effect of Moderate Freshwater Fish Diet on Erythrocyte Ghost Phospholipid Fatty Acids

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Abstract
Dose responses over 12 weeks of meals containing fish on erythrocyte phospholipids were studied in male students. In all major glycerophospholipids the proportions of long chain n-3 fatty acids increased at the expense of n-6 fatty acids with 1.5 meals a week containing fish (0.5 g n-3 fatty acids per day). The rates and magnitudes of changes varied for individual phospholipids: faster but quantitatively smaller changes occurred in phosphatidylcholine than in phosphatidylethanolamine and phosphatidylserine. Fish diet and fish oil studies have usually been made using large doses over a short time. Our results show that similar effects might result from smaller amounts given over a longer time.