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Aggress Behav. 2011 Jan-Feb;37(1):73-80. doi: 10.1002/ab.20366.

Sweetened blood cools hot tempers: physiological self-control and aggression.

Author information

  • 1Department of Psychology, University of Kentucky, Kastle Hall, Lexington, USA. nathan.dewall@uky.edu

Abstract

Aggressive and violent behaviors are restrained by self-control. Self-control consumes a lot of glucose in the brain, suggesting that low glucose and poor glucose metabolism are linked to aggression and violence. Four studies tested this hypothesis. Study 1 found that participants who consumed a glucose beverage behaved less aggressively than did participants who consumed a placebo beverage. Study 2 found an indirect relationship between diabetes (a disorder marked by low glucose levels and poor glucose metabolism) and aggressiveness through low self-control. Study 3 found that states with high diabetes rates also had high violent crime rates. Study 4 found that countries with high rates of glucose-6-phosphate dehydrogenase deficiency (a metabolic disorder related to low glucose levels) also had higher killings rates, both war related and non-war related. All four studies suggest that a spoonful of sugar helps aggressive and violent behaviors go down.

© 2010 Wiley-Liss, Inc.

PMID:
21064166
[PubMed - indexed for MEDLINE]
PMCID:
PMC4073202
Free PMC Article

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