You'll find that the "science" behind nutritional theories to be totally contradictory. What one study concludes is completely invalidated by another study. And you're not going to get enough information about all the parameters of any study to tell the good ones from the bad ones. So don't worry about the science too much - you'll go crazy.
Antioxidant Research: Making Sense Out of the Contradictions
If you read something that makes sense, try it! You can't do much harm really.
I highly suggest meditiation with a brain-entrainment program.
Here's one source; you'll find that they use what is called "binaural beat" technology. There are other providers, but don't get any other kind of meditation CD.
Immrama Institute - Awaken your mind's infinite potential