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Effects of Long-Chain Polyunsaturated Fatty Acids in Combination with Lutein and Zeaxanthin on Episodic Memory in Healthy Older Adults. | LitMetric

AI Article Synopsis

  • The study explored whether a combination of long-chain polyunsaturated fatty acids (LCPUFAs) and carotenoids (lutein and zeaxanthin) could enhance memory function in healthy older adults.
  • Two randomized, double-blind, placebo-controlled trials were conducted on older Japanese individuals with memory complaints, with one group receiving the supplements and the other a placebo.
  • Results indicated that while the supplementation did not significantly benefit healthy older adults with memory complaints, it did show improvement in those experiencing cognitive decline.

Article Abstract

Arachidonic acid (ARA), docosahexaenoic acid (DHA), and eicosapentaenoic acid (EPA), which are long-chain polyunsaturated fatty acids (LCPUFAs), as well as lutein (L) and zeaxanthin (Z), can potentially improve brain function. However, the effect of a combination of these components (LCPUFAs + LZ) on memory function in healthy older individuals remains unclear. This study aimed to determine if LCPUFAs + LZ-supplemented food could improve memory function. Exploratory and confirmatory trials (Trials 1 and 2, respectively) were conducted in healthy older Japanese individuals with memory complaints. We conducted randomized, double-blind, placebo-controlled, parallel-group trials. Participants were randomly allocated to two groups: placebo or LCPUFAs + LZ. LCPUFAs + LZ participants were provided with supplements containing ARA, DHA, EPA, L, and Z for 24 weeks in Trial 1 and 12 weeks in Trial 2. Memory functions were evaluated using Cognitrax before and after each trial. Combined analyses were performed for subgroups of participants with cognitive decline in Trials 1 and 2. The results showed that supplementation with LCPUFAs + LZ did not significantly affect memory function in healthy, non-demented, older individuals with memory complaints whereas it improved memory function in healthy, non-demented, older individuals with cognitive decline.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10343771PMC
http://dx.doi.org/10.3390/nu15132825DOI Listing

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