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Fish consumption and omega-3 fatty acid supplementation for prevention or treatment of cognitive decline, dementia or Alzheimer's disease in older adults - any news?
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Public Health and Caring Sciences. (Klinisk nutrition och metabolism)
2017 (English)In: Current opinion in clinical nutrition and metabolic care, ISSN 1363-1950, E-ISSN 1473-6519, Vol. 20, no 2, 104-109 p.Article in journal (Refereed) Published
Abstract [en]

PURPOSE OF REVIEW: Twenty years of research indicates that fish and n-3 fatty acids (FAs), for example docosahexaenoic acid, may attenuate cognitive decline including Alzheimer's disease in older people. This review concerns reports during 2015-2016 in humans.

RECENT FINDINGS: One prospective cohort study showed that seafood consumption was related to less neuritic plaques and neurofibrillary tangles in brain autopsies from elderly care residents. In a large 5-year intervention no effects on cognition could be shown either in n-3 FA supplemented or in control patients. Two meta-analyses in community-dwelling patients support preservation of cognition with higher fish intake. Older adults with memory complaints may improve cortical blood flow during memory challenges by n-3 FA supplementation. Recalculations from a report in Alzheimer's disease patients indicated a dose-response pattern between increments of serum n-3 FAs and cognitive improvement. Still, a Cochrane review (using three randomized control trials) concluded that n-3 FAs cannot provide any 6-month benefit in patients with mild/moderate Alzheimer's disease.

SUMMARY: The accumulated knowledge indicates that healthy populations may have preventive benefits from fish and docosahexaenoic acid intake, like older adults with memory complaints/mild cognitive impairment, and maybe subgroups of patients with mild/moderate Alzheimer's disease may also show such benefits. Still, more studies are needed.

Place, publisher, year, edition, pages
2017. Vol. 20, no 2, 104-109 p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-317125DOI: 10.1097/MCO.0000000000000350PubMedID: 27977429OAI: oai:DiVA.org:uu-317125DiVA: diva2:1080590
Available from: 2017-03-10 Created: 2017-03-10 Last updated: 2017-03-10

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