Fish really is brain food. A recent European study of elderly men and women found that those who regularly ate seafood did way better on cognitive tests than those who ate little or none. The more fish these old folks ate, the better they did on their tests. Effects were more pronounced for non-processed lean fish and fatty fish.

If you can't imagine eating a lot of fish, try to think outside the box. You don't have to consume only fillets and steaks. Try some smoked salmon with your eggs or dose a healthy salad with some canned tuna. Like anchovies? They count too.