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Aggress Behav. 2010 Mar-Apr;36(2):117-26. doi: 10.1002/ab.20335.

Effects of nutritional supplements on aggression, rule-breaking, and psychopathology among young adult prisoners.

Author information

1
WODC, Ministry of Justice, The Hague, The Netherlands. a.zaalberg@minjus.nl

Abstract

In an earlier study, improvement of dietary status with food supplements led to a reduction in antisocial behavior among prisoners. Based on these earlier findings, a study of the effects of food supplements on aggression, rule-breaking, and psychopathology was conducted among young Dutch prisoners. Two hundred and twenty-one young adult prisoners (mean age=21.0, range 18-25 years) received nutritional supplements containing vitamins, minerals, and essential fatty acids or placebos, over a period of 1-3 months. As in the earlier (British) study, reported incidents were significantly reduced (P=.017, one-tailed) in the active condition (n=115), as compared with placebo (n=106). Other assessments, however, revealed no significant reductions in aggressiveness or psychiatric symptoms. As the incidents reported concerned aggressive and rule-breaking behavior as observed by the prison staff, the results are considered to be promising. However, as no significant improvements were found in a number of other (self-reported) outcome measures, the results should be interpreted with caution.

PMID:
20014286
DOI:
10.1002/ab.20335
[Indexed for MEDLINE]

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