....A similar paper, published in 2002 in the British Journal of Psychiatry, found that among young adult prisoners given supplements of the vitamins, minerals and fatty acids in which they were deficient, disciplinary offences fell by 26% in the experimental group, and not at all in the control group...In March this year the lead author of the 2002 report, Bernard Gesch, told the Ecologist magazine that "having a bad diet is now a better predictor of future violence than past violent behaviour ... 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."

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