We don’t often put up such a “believe it or not” / “popular science” sounding headline on this Blog, but here’s a rather neatly done scientific study from 2010 that seems to confirm those old sayings about fish being “brain food.”
University of Pittsburgh researchers recently reported on an interesting study about the connection between omega-3 fatty acids (such as those found in fish oil) and cognitive function. The research study followed 280 healthy adults, aged 35-54, and looked at how they performed on tests of nonverbal reasoning and working memory. Researchers found that those who registered higher blood levels of the omega-3 fatty acid docosahexaenonic acid (DHA) performed significantly better on these tests. They did not find any association between two other omega-3 fatty acids, a-linolenic acid (ALA) and eicosapentaenoic acid (EPA), and mental performance measures. They conclude that “DHA is associated with major aspects of cognitive performance in nonpatient adults [up to 55 years old]. These findings suggest that DHA is related to brain health throughout the lifespan…”
Our comment: in recent years there have been several studies relating dietary intake of fish or omega-3 fatty acids and better early brain development and lowered risk of cognitive disorders in late life. (Also , higher fish oil/omega-3 fatty acids intake has been linked to lower rates of depression.) This 2010 study adds evidence that it is specifically DHA that delivers cognitive benefit such as improved reasoning and working memory.
Reference: Matthew Muldoon et al, Serum Phospholipid Docosahexaenonic Acid Is Associated with Cognitive Functioning during Middle Adulthood. The Journal of Nutrition – J. Nutr. 140: 848–853, 2010
NYBC stocks this supplement, which, as the tradename suggests, focuses on providing a substantial dose of DHA, the omega-3 fatty acid found to be effective in the Univ. of Pittsburgh study: