From a story in The Economist and posted on Slashfood:

Dr Fernando Gómez-Pinilla, a professor of neurosurgery and physiological science at the University of California, Los Angeles, conducted research on the way antioxidants and vitamins work with synapses in the brain. Based on his study, below are certain foods that can lead to a healthy brain:

1. Walnuts – Like all nuts, they are full of antioxidants that increase our memory. Walnuts in particular are high in omega-3s which improve our resistance to depression, bipolar disorder, schizophrenia, dementia, attention-deficit disorder, and dyslexia.
2. Kiwis – They are also high in omega-3s.
3. Berries – These too are high in antioxidants. They are polyphenols, chemicals that affect responses to different kinds of stimulation. They enhance long-term memory.
4. Curcumin – This is another polyphenol. It’s used so often in India that cases of Alzheimer’s disease is rare. It’s the ingredient that makes turmeric yellow.
5. Oily Fish, such as salmon – It’s high in omega-3s. In fact, oily fish is such a dominant part of the diet of the inhabitants of the Japanese island of Okinawa that they have an extremely low rate of mental disorder.

Perhaps the folks eating the cheetos and seeing jesus ought to try a few walnuts?