Omega-3 Fatty Acids
You may know these as staples of the famously heart-healthy Mediterranean diet, but recent evidence suggests they can lower the risk of Alzheimer’s, too. Eating fatty fish such as salmon, herring, or white tuna once a week may slow cognitive decline by 10%.
Omega-3 fatty acids, especially the type known as DHA found in fatty fish appear to be the key. Since high levels of DHA are needed for normal brain development, that makes sense. In addition, omega-3 fatty acids of all varieties — including those found in walnuts, flaxseed, and olive oil — counter inflammation, which may contribute to protein build-up in the brain.