Can Eggs Make You Smarter?

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Like your poached egg and whole-wheat toast in the morning? Your brain might enjoy it, too.

Eating selenium-rich foods -- like eggs -- could help keep your memory sharp and your brain speed on high as you age.

Your Brain on Selenium
In rural China, researchers found that elderly people who got at least the U.S. recommended daily value of selenium (about 55 micrograms per day) had cognitive test scores that put them in a league with people 10 years younger. Test your mental acuity with this quiz and see how you match up for your age.

Super Sources
You can get your daily dose of selenium by eating whole-wheat bread (10 micrograms per slice), eggs (14 micrograms per egg), tuna (63 micrograms per 3-ounces), Brazil nuts (270 micrograms per half ounce), and many other foods. In other words, you don't have to go overboard with eggs -- and probably shouldn't -- to get your fill.