The scientists discovered that a protein, called tau, that leads to the development of neurofibrillary tangles in the brain was slowed by DHA. These tangles are one of two signature brain lesions of Alzheimer’s disease. DHA also reduced the other lesion caused by the protein beta amyloid, which can clump in the brain and form plaques.

This is not the first study to suggest a benefit from the fatty acid. Researchers previously discovered that DHA may have a therapeutic affect. The new research has found that DHA can delay the onset of the Alzheimer’s disease.
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“We are greatly excited by these results, which show us that simple changes in diet can positively alter the way the brain works and lead to protection from Alzheimer’s disease pathology,” said Frank LaFerla, professor of neurobiology and behavior and co-author of the study.

“Combined with mental stimulation, exercise, other dietary intakes, and avoiding stress and smoking, we believe that people can significantly improve their odds against this disease,” said Kim Green, scientist and lead author on the DHA, learning and stress studies.

This research adds credence to the evidence that diet and lifestyle changes can reduce the risk of developing Alzheimer’s disease. Those at risk can slow the progression of the disease by keeping their minds active and by eating diets rich in DHA Omega-3 fatty acids.

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