Dr. Ramsey calls eggs the perfect food. They're loaded with mood-promoting omega-3 fatty acids, zinc, B vitamins, and iodide, and they'll keep you full and energized.
The problem is that these days, buying the best egg has become complicated, even for the savviest label sleuth. Egg carton claims promise all sorts of nutrients and living conditions for the laying hens, but many claims aren't even regulated. The best egg for your brain is the kind your great-grandmother probably enjoyed: hens raised on pasture, where they can exercise and eat a diet of grass and bugs, supplemented with organic grains. Look for pastured eggs from local farmers you trust, and rely less on grocery store eggs advertised as "omega-3 enriched" or "free-range," both claims that aren't regulated.
Read More: Truly Healthy Eggs: A Quick and Easy Guide.