Omega-3 fatty acids provide a lot of energy for the brain, Werner-Gray says. Two crucial ones -- EPA and DHA -- are primarily found in certain fish. The Omega 3s that are not converted to EPA or DHA remain
s inactive and are simply stored or used as energy. Foods that are high in Omega 3s include salmon, chia seeds, walnuts, oysters, tuna, soybeans, anchovies.