Finally, A Straight Answer

From Frontal Cortex

"The fact of the matter is that the best diet in the 21st century is essentially the diet of an 18th century Tuscan peasant. As Pollan observes, this diet doesn't take very long to describe: "Eat food. Not too much. Mostly plants." If you follow that sage advice, you won't need to nourish your brain with the latest supermarket gimmicks."