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14 March 2012

Trans fat consumption linked to greater aggression

Researchers have shown that consumption of dietary trans fatty acids is linked with an increase in aggressive behaviour.

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Researchers at the University of California, San Diego School of Medicine have shown that consumption of dietary trans fatty acids (dTFAs) is associated with irritability and aggression.

The study of nearly 1 000 men and women provides the first evidence linking dTFAs with adverse behaviours that impacted others, ranging from impatience to overt aggression. The research, led by Beatrice Golomb, MD, PhD, associate professor in the UC San Diego Department of Medicine, has been published online by PLoS ONE.

What are dTFAs?

Dietary trans fatty acids are primarily products of hydrogenation, which makes unsaturated oils solid at room temperature. They are present at high levels in margarine, shortenings and prepared foods. Adverse health effects of dTFAs have been identified in lipid levels, metabolic function, insulin resistance, oxidation, inflammation, and cardiac health.

The UC San Diego team used baseline dietary information and behavioural assessments of 945 adult men and women to analyse the relationship between dTFAs and aggression or irritability.

The survey measured such factors as a life history of aggression, conflict tactics and self-rated impatience and irritability, as well as an "overt aggression" scale that tallies recent aggressive behaviours. Analyses were adjusted for sex, age, education, and use of alcohol or tobacco products.

"We found that greater trans fatty acids were significantly associated with greater aggression, and were more consistently predictive of aggression and irritability, across the measures tested, than the other known aggression predictors that were assessed," said Golomb.

"If the association between trans fats and aggressive behaviour proves to be causal, this adds further rationale to recommendations to avoid eating trans fats, or including them in foods provided at institutions like schools and prisons, since the detrimental effects of trans fats may extend beyond the person who consumes them to affect others."

(EurekAlert, March 2012) 

Read more:

SA declares war on trans fats

Diet & Nutrition

 
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