How does bread effect the brain?

This doesn't directly answer the question but fast food is very bad for your whole body. you may be used to people saying that but did you know that a Big Mac has 12 known cancer-causing chemicals in it? I would say that will affect your body very much. Drive by McDonalds and smell that nice grilled smell, WRONG! its a chemical that is put in the burgers to make it smell grilled. You've seen the burgers sitting under a heat lamp, well they have been there for hours.