By Study Finds
Middle-aged people who consume more omega-3-rich foods (like oily fish) and supplements are more likely to be better thinkers and avoid dementia, a new study finds.
Researchers with the American Academy of Neurology found eating more of the healthy fatty acids, which are abundant in salmon, sardines, trout, and albacore tuna, helps improve brain structure and health. People can also buy foods fortified with omega-3 or find it in pill-form at a vitamin shop.
Writing in the journal Neurology, Dr. Claudia Satizabal of the University of Texas Health Science Center at San Antonio says simply increasing omega-3 in our diets could massively benefit public health as people age.
“If people could improve their cognitive resilience and potentially ward off dementia with some simple changes to their diet, that could have a large impact on public health. Even better, our study suggests that even modest consumption of omega-3 may be enough to preserve brain function. This is in line with the current American Heart Association dietary guidelines to consume at least two servings of fish per week to improve cardiovascular health.”
How much omega-3 does the brain need?
Study authors measured the thinking skills of 2,183 people, along with their brain volumes. The fatty acid levels in the group with the lowest thinking skills contained 3.4 percent omega-3, meanwhile the highest achieving group averaged 5.2 percent omega-3 content.
Researchers report that the optimal level was over eight percent, with anything between four percent and eight percent being intermediate. The team considered anything below four percent low. The participants had an average age of 46.
“These results need to be confirmed with additional research, but it’s exciting that omega-3 levels could play a role in improving cognitive resilience, even in middle-aged people,” Satizabal says.
However, she notes that the study looked at a snapshot in time and they would need to follow participants over a prolonged period. This could turn the findings from “eating omega-3 is associated with preserving brain function,” to “eating more omega-3 is proven to preserve brain function.”
Currently, the research only shows an association and does not prove causation. Another limitation was the majority of the study sample were non-Hispanic white adults, so a more diverse group of middle-aged adults may yield different results.
South West News Service writer Pol Allingham contributed to this report.
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