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In a growing elderly population, Mild Cognitive Impairment (MCI) and Age Related Cognitive Decline (ARCD) are increasing in prevalence worldwide. In the search for food compounds able to ameliorate this condition, it has been postulated that n-3 Long Chain Polyunsaturated Fatty Acids (n-3 LCPUFA), also known as omega-3, consumption could have a positive effect in the prevention or therapy of these cognitive declines. This current systematic review studies the relationship between n-3 LCPUFAs and cognitive status in aged adult and elder populations to determine whether there is or not a positive effect of n-3 LCPUFAs supplementation on cognitive decline. A search of Randomized Controlled Trials (RCTs) related with the relationship between cognitive impairment and n-3 LCPUFA (Docosahexaenoic Acid, Eicosapentanoic Acid or combined) supplementation was conducted through PubMed database from January, 2010 to December, 2017 following the PRISMA statement. Interventional studies which included aged adults or elder subjects with or without MCI and with no previous intake of Fish Oil Supplements (FOS) were included. Ten out of the fourteen RCTs reviewed showed positive outcome on at least one domain of cognitive function (working memory, executive function, verbal memory, short-term memory, perceptual speed, etc.). This Systematic Review concludes that omega-3 supplementation might have a positive effect on cognitive function. Thus, n-3 LCPUFAs could be used as a preventive or therapeutic tool for cognitive decline in aged or elder adults.
This article was published in the following journal.
Name: Nutricion hospitalaria
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FATTY ACIDS which have the first unsaturated bond in the sixth position from the omega carbon. A typical American diet tends to contain substantially more omega-6 than OMEGA-3 FATTY ACIDS.
A group of fatty acids, often of marine origin, which have the first unsaturated bond in the third position from the omega carbon. These fatty acids are believed to reduce serum triglycerides, prevent insulin resistance, improve lipid profile, prolong bleeding times, reduce platelet counts, and decrease platelet adhesiveness.
A group of fatty acids that contain 18 carbon atoms and a double bond at the omega 9 carbon.
FATTY ACIDS found in the plasma that are complexed with SERUM ALBUMIN for transport. These fatty acids are not in glycerol ester form.
Organic, monobasic acids derived from hydrocarbons by the equivalent of oxidation of a methyl group to an alcohol, aldehyde, and then acid. Fatty acids are saturated and unsaturated (FATTY ACIDS, UNSATURATED). (Grant & Hackh's Chemical Dictionary, 5th ed)
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