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Illinois Ag News Headlines |
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Seafood Consumption May Reduce Alzheimer's Risk
Illinois Ag Connection - 02/10/2016
New research published in the Journal of the American Medical Association found that older adults with a major risk gene for Alzheimer's disease known as APOE?4 who ate at least one seafood serving per week showed fewer signs of Alzheimer's-related
brain changes. In contrast, this association was not found in the brains of volunteers who ate fish weekly but did not carry the risk gene.
The researchers also examined the brains for levels of mercury, which can be found in seafood and is known to be harmful to the brain and nervous system. They found that seafood consumption was associated with increased mercury levels in the brains but not
the amount of beta amyloid protein plaques and tau protein tangles, the hallmarks of Alzheimer's disease.
The study aimed to determine whether seafood consumption is related to brain mercury levels, and whether either seafood consumption or brain mercury levels may play a role in the brain changes that lead to Alzheimer's disease and related dementias.
Older volunteers participating in the Memory and Aging Project (MAP) study, conducted by Rush University Medical Center, completed annual dietary questionnaires over a number of years. At the start of the study, the participants were cognitively normal, but
some eventually developed cognitive impairment and dementia. The brains of 286 deceased study participants, whose average age was 89.9 years, were analyzed for neuropathologies, or detrimental brain changes, of Alzheimer's disease and other dementias.
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