Alzheimer’s disease, a condition that progressively destroys
a person’s memory and ability to communicate, affects an estimated
4.5 million Americans. However, researchers may have discovered
a way to lower this shocking statistic: Studies indicate eating
a diet high in omega-3 fatty acids--found in fish--may fend off
Alzheimer’s.
To arrive at this conclusion, researchers studied older mice genetically
engineered to develop the disease. The mice were divided into two
groups:
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One group was fed a diet rich in docosahexanoic acid, or DHA,
the omega-3 fatty acid found in various types of coldwater fish
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The other group was fed a low-DHA diet; such diets have been
associated with impaired mental functioning
Health Benefits of Omega-3 Fatty Acids
Within five months of the study, a 70 percent less buildup of amyloid
protein--which makes up the plaques in the brain famously attributed
to Alzheimer’s--was detected in mice that were fed a diet rich
in DHA-fortified foods. These results coordinate with the team’s
previous findings that DHA
was responsible for protecting the brains of mice from synaptic
damage, enabling them to perform better on memory tests.
Additionally, it is recommended by the American Heart Association
that healthy adults eat a minimum of two servings of fish (i.e.
mackerel, sardines, albacore tuna, salmon, lake trout herring) a
week, as omega-3 fatty acids have also been found to be beneficial
to human hearts.
The
Journal of Neuroscience March 23, 2005 25(12): 3032-40
ABC
News March 22, 2005
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