"Having a bad diet is now a better predictor of future violence than past violent behavior. In fact, predicting future criminal behavior from a criminal past has statistically little better than a random chance of being correct. Likewise, a diagnosis of psychopathy, generally perceived as being a better predictor than a criminal past, is still miles behind what you can predict just from looking at what a person eats."
— Researcher Bernard Gesch, author of a landmark
study on diet and criminal
behavior, quoted by Pat Thomas in The Ecologist, April 2006