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Related Experiment Video

Updated: May 3, 2026

Breakfast Habits among Schoolchildren in the City of Uruguaiana, Brazil
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Adolescence: Does good nutrition = good behaviour?

Bernard Gesch1

  • 1University of Oxford, UK bernard.gesch@dpag.ox.ac.uk.

Nutrition and Health
|February 7, 2014
PubMed
Summary
This summary is machine-generated.

Adolescent offenders given vitamin and mineral supplements committed significantly fewer crimes. This simple nutritional intervention shows promise for reducing antisocial behavior and improving health in young people.

Keywords:
Violencebrainnutrition

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Area of Science:

  • Nutritional Neuroscience
  • Criminology
  • Public Health

Background:

  • Adolescents are disproportionately represented in the criminal justice system.
  • Disaffected youth often have poor dietary habits and limited access to nutritious food.
  • Poor diet may be a modifiable factor contributing to antisocial behaviors.

Purpose of the Study:

  • To investigate the impact of nutrient supplementation on the behavior of young adult prisoners.
  • To determine if reinstating missing nutrients in the diet can reduce criminal offenses.

Main Methods:

  • A double-blind, placebo-controlled study involving 231 young adult prisoners (18-21 years).
  • Participants received either placebo or capsules containing essential vitamins, minerals, and fatty acids.
  • Offense rates were monitored before and during supplementation.

Main Results:

  • Supplement recipients committed 26.3% fewer offenses compared to the placebo group.
  • Those taking supplements for at least two weeks showed a 37% reduction in serious offenses, including violence.
  • Replication studies, including one by the Dutch Ministry of Justice, reported similar significant reductions in offenses.

Conclusions:

  • Nutrient supplementation can be a simple, humane, and non-discriminatory method to reduce antisocial behavior and violence.
  • Improving diet through supplementation may offer a viable strategy for crime prevention in both institutional and community settings.
  • Further replication is needed to confirm these findings and their broad applicability.