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Related Experiment Video

Updated: May 24, 2026

Fat Preference: A Novel Model of Eating Behavior in Rats

Fat Preference: A Novel Model of Eating Behavior in Rats

Published on: June 27, 2014

Trans fat consumption and aggression.

Beatrice A Golomb¹, Marcella A Evans, Halbert L White

¹Department of Medicine, University of California San Diego, San Diego, California, United States of America. bgolomb@ucsd.edu

|March 10, 2012

Summary

Dietary trans fatty acids (dTFA) are linked to increased aggression and irritability. This study provides the first evidence of this association, suggesting potential public health implications for trans fat consumption.

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Area of Science:

Neuroscience
Nutritional Science
Behavioral Science

Background:

Dietary trans fatty acids (dTFA) are synthetic compounds with largely unknown behavioral effects.
dTFA may inhibit omega-3 fatty acid production, which is linked to reduced aggression.
Investigating the behavioral impact of dTFA is crucial.

Purpose of the Study:

To determine the association between dietary trans fatty acids (dTFA) and aggression/irritability.
To analyze the relationship between dTFA intake and adverse behavioral outcomes.

Main Methods:

Analysis of baseline dietary and behavioral data from 945 adult participants in a clinical trial.
Assessment of aggression using the Overt Aggression Scale Modified, Life History of Aggression, Conflict Tactics Scale, and self-rated impatience/irritability.
Regression and ordinal logit analyses, adjusted for confounders, and stratified analyses by sex, age, and ethnicity.

Main Results:

Higher intake of dietary trans fatty acids (dTFA) was strongly and significantly associated with increased aggression.
dTFA were more consistently predictive of aggression than other assessed factors.
The association remained significant after adjusting for confounders and across various demographic strata, both cross-sectionally and prospectively.

Conclusions:

This study presents the first evidence linking dTFA consumption to behavioral irritability and aggression.
The findings suggest a potential causal connection, supported by the strength, consistency, and biological plausibility of the association.
Results may inform public policy regarding dietary trans fat regulations.