Research appearing in the Journal of Neuroscience (December 26, 2007, Vol 27, Issue 52, pp 14299-14307) shows that DHA (an omega-3 fatty acid) can increase the production of a protein that helps to block enzymes that are responsible for producing the plaques found in Alzheimer’s disease. The research, found that DHA increases a protein, called LR11, in rat neurons. LR11 inhibits amyloid precursor protein (APP), which is involved with the production of the plaques associated with Alzheimer’s disease.  Earlier research has shown that omega-3 fatty acid supplementation may slow cognitive decline.