Many of the foods that people have come to know as "soul food" are unhealthy for both body and mind. It doesn't take a doctor to figure out that eating foods high in fat, salt, sugar, & preservatives can make you obese, but most people don't know about the effects of these foods on the function of the brain. Food is used to enrich some while oppressing others. By marketing poisonous, highly addictive foods to the masses without regard for public safety, the food giants deliberately prey on the unaware. Unfortunately, it tastes sooooo gooood, most people don't realized they are being treated inhumanely.
The brain is the master of thought and behavior. Therefore, a poor state of your health will soon manifest itself in one's actions. The Honorable Elijah Muhammad put this very simplistically in the timeless book How to Eat to Live:
“…we prepare our own sick bed, hospital bills, and undertaker bills with what we eat and what we drink. And besides this comes a sick mind and after a sick mind comes death.”
Shortly after the movie Precious was released, a high school friend was writing about whether the image of swine sizzling in a frying pan had anything to do with the stomach-turning behavior in the movie. Science would say it most certainly does. Here are a few links with more information about how food effects your brain and behavior. Yes, soda can make you violent, sugar can make you stupid, and sausage can give you Alzheimer's. This is your brain on bacon. Any questions?