[iQuercus]

This sounds more like diet marketing. People have such varying success with different diets that one set of foods simply cannot fit all.

Exercise is a different story. The most likely to bring about the improvements you describe.

[jdcaron]

It's hard to believe you made such a comment without including more doubts in your claim. I will leave one link, I hope it changes your mind and people mind if they agree with your comment. But there's more science supporting that a good nutrition help the brain: https://www.health.harvard.edu/blog/nutritional-psychiatry-y...