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A new study now shows that taking more omega-3-fatty acid DHA (docosahexaenonic acid) might boost brain function for people between 35 and 54. Nonverbal reasoning and memory work increased with higher DHA levels in the blood. This implication suggests that DHA is connected to mental function and might affect neuropsychiatric disorders. DHA helps keep brain cell membranes healthy and aids the communication within brain cells.
The study consisted of 280 participants who did not have any major neuropsychiatric disorders and did not take fish oil or omega-3 supplements before hand. Their blood levels of ALA and EPA, and DHA were measured and related to five major dimensions of cognitive functioning neuropsychological tests. Those with higher DHA levels tended to perform better on tests of nonverbal reasoning, mental flexibility, vocabulary, and working memory. EPA and ALA did not connect with any other cognitive performance.
Omega-3 has not only previously reported to decrease risk of Alzheimer's Disease, it now also seems to improve memory function and heart health. However, the connection is not solid and researchers can only imply that DHA affects brain health.
SOURCE: Journal of Nutrition Publshed online ahead of print, doi:10.3945/jn.109.119578 "Serum Phospholipid Docosahexaenonic Acid Is Associated with Cognitive Functioning during Middle Adulthood" Authors: M.F. Muldoon, C.M. Ryan, L. Sheu, J.K. Yao, S.M. Conklin, S.B. Manuck
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