"People with lower blood levels of omega-3 fatty acids had lower brain volumes that were equivalent to about 2 years of structural brain aging," study author Zaldy S. Tan, MD, MPH, from the Easton Center for Alzheimer's Disease Research and the Division of Geriatrics, University of California, Los Angeles. Results showed that lower red blood cell (RBC) levels of DHA and EPA in late middle age were associated with smaller brain volumes and a "vascular" pattern of cognitive impairment, even in persons free of clinical dementia. The findings were published in the February 28 issue of Neurology.
Some previous population-based studies have suggested an association between higher intake of fatty fish and a lower risk of dementia, as well as other health outcomes. In the original Framingham Study cohort, individuals with the highest DHA levels had a 47% reduction in all-cause dementia and a 39% lower risk of developing Alzheimer's disease.
source: Medscape
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