• Kikue Todoroki, Yoshimori Ikeya, Sayato Fukui, Chiharu Tanaka, Kaori Sekine, Toru Shizuma, Naoto Fukuyama, and Hidezo Mori.
• Department of Physiology, Tokai University School of Medicine, Kanagawa, Japan.
• Nutrition. 2016 Jul 1; 32 (7-8): 806-10.

ObjectiveWe have identified that vital prognosis of adults in a group home (GH) in their mid-80s is associated with lower eicosapentaenoic acid (EPA) levels. We investigated the cause of EPA deficiency in residents in a GH and the effect of EPA treatment on cardiac function and nutritional function in 130 older adults.MethodsWe compared blood chemistry data among three age- and sex-matched groups-outpatient clinic (OPC) attendees (n = 54, 87 ± 5 y old), GH residents (n = 40, 85 ± 8 y old), and older adults in a geriatric welfare home for the elderly (GWHE) (n = 36, 87 ± 6 y old)-using non-parametric test. Furthermore, we investigated the sequential changes in blood chemistry and cardiac function at 4 to 12 mo after the initiation of EPA administration (1800 mg/d).ResultsNon-parametric test revealed that the EPA/arachidonic acid ratio as well as EPA levels were lower in the GH and GWHE residents than in the OPC attendees (OPC: 0.56 ± 0.3, GH: 0.23 ± 0.12, GWHE: 0.31 ± 0.1). Fish consumption was lower in the GH and GWHE group than in the OPC group. Repeated measured analyses using analysis of variance revealed that EPA administration increased serum EPA levels (54.0 ± 29.0 to 210.5 ± 50.6 μg/mL, P < 0.001); decreased arachidonic acid, docosahexaenoic acid, triacylglycerol, and LDL cholesterol levels at 4.5 ± 3.4 mo after administration; and reduced the severity of supraventricular arrhythmias on ambulatory electrocardiogram at 12.5 ± 4.5 mo (P < 0.05).ConclusionEPA deficiency in GH residents could be related to the nutritional characteristics of older adults in care facilities. EPA treatment induced changes in various lipids and reduced the severity of supraventricular arrhythmias.Copyright © 2016 Elsevier Inc. All rights reserved.

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