Fish oil may ward off alcohol-related dementia

September 10, 2013

Scientists have found that omega-3 fish oil may help protect against alcohol-related dementia. Previous studies have shown that long-term alcohol abuse increases the risk of dementia.
Now, a study by Loyola University Chicago Stritch School of Medicine found that in the brain cells of rats exposed to high levels of alcohol, a fish oil compound protected against inflammation and cell death.
An earlier analysis by Michael A Collins and colleague Edward J Neafsey, which pooled the results of 143 studies, found that moderate social drinking may reduce the risk of dementia and cognitive impairment.
Moderate drinking is defined as a maximum of two drinks per day for men and 1 drink per day for women. It appears that small amounts of alcohol might, in effect, make brain cells more fit. Alcohol in moderate amounts stresses cells and thus toughens them up to cope with major stresses down the road that could cause dementia.
However, too much alcohol overwhelms the cells, leading to inflammation and cell death. In the new study, Collins and colleagues exposed cultures of adult rat brain cells to amounts of alcohol equivalent to more than four times the legal limit for driving in the US.
These cell cultures were compared with cultures of brain cells exposed to the same high levels of alcohol, plus a compound found in fish oil called omega-3 docosahexaenoic acid (DHA). Researchers found there was about 90 per cent less neuro inflammation and neuronal death in the brain cells exposed to DHA and alcohol than in the cells exposed to alcohol alone.
Further studies are needed to confirm whether fish oil protects against alcohol-related dementia. “Fish oil has the potential of helping preserve brain integrity in abusers. At the very least, it wouldn’t hurt them,” Collins said. The study was presented at the 14th Congress of the European Society for Biomedical Research on Alcoholism in Warsaw.

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