Fish Oil May Protect Against Parkinson's Disease

[Harry Hirsute]

The researchers observed that when mice were fed an omega-3 rich diet, they seemed immune to the effect of MPTP, a toxic compound that causes the same damage to the brain as Parkinson’s. “This compound, which has been used for more than 20 years in Parkinson’s research, works faster than the disease itself and is just as effective in targeting and destroying the dopamine-producing neurons in the brain,” points out Calon.

By contrast, another group of mice that were fed an ordinary diet developed the characteristic symptoms of the disease when injected with MPTP, including a 31% drop in dopamine-producing neurons and a 50% decrease in dopamine levels.

Analyses revealed that omega-3 fatty acids—in particular DHA (docosahexaenoic acid), a specific type of omega-3—had replaced the omega-6 fatty acids already present in the brains of the mice that had been given omega-3 supplementation.

“This demonstrates both the importance of diet on the brain’s fatty acid composition and the brain’s natural inclination for omega-3 fatty acids,” observes Calon. Since concentrations of other types of omega-3’s had remained similar in both groups of mice, researchers suggest that the protective effect against Parkinson’s comes essentially from DHA.

Another conclusion to be drawn from this finding is that a brain containing a lot of omega-6 fatty acids may be a fertile ground for Parkinson’s disease. These fatty acids, abundant in foods rich in either vegetable oil or animal fat, are already under suspicion for their role in the body’s inflammatory response, cardiac disease, arthritis, and Alzheimer’s. In a balanced diet, the ratio between omega-6 and omega-3 fatty acids should be 4 to 1. However, the average Western diet contains 10 to 20 times more omega-6’s than omega-3’s.

http://www.eurekalert.org/pub_releas...-ofa112607.php