Oct 2, 2013
“…why is it that a new study of older women published in the journal Neurology finds that omega-3s may not benefit thinking skills or help fend off cognitive decline?…As study author Eric Ammann, of the University of Iowa, points out in an email, “most randomized trials of omega-3 supplements have not found an effect on cognitive function.”
“When you eat fish, there are other nutrients such as vitamin E or vitamin D” that you’re getting at the same time, says researcher Rosebud Roberts of the Mayo Clinic. In other words, it’s the whole food, as a package, that may be beneficial. And this seems to be the general picture emerging in human health: getting nutrients and healthful fats from the foods we eat as part of a healthful diet, rather than from supplements, may be the way to go.”
Study: Omega-3 fatty acids and domain-specific cognitive aging (Neurology). From the Abstract:
- Objective: To test the hypothesis that higher levels of red blood cell (RBC) docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) have a protective association with domain-specific cognitive function in women aged 65 years and older.
- Results: After adjustment for demographic, clinical, and behavioral characteristics, no significant cross-sectional cognitive differences were found between women in the high and low DHA + EPA tertiles at the time of the first annual cognitive battery. In addition, no significant differences were found between the high and low DHA + EPA tertiles in the rate of cognitive change over time.
- Conclusions: We did not find an association between RBC DHA + EPA levels and age-associated cognitive decline in a cohort of older, dementia-free women.