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Neurochemical Alterations in Aggression: A Meta-Analysis.
Yong-Ming Wang1, Yong-Liang Cao2, Jia-Sheng Yang1
1Jiangsu Key Laboratory of Drug Discovery and Translational Research for Brain Diseases, School of Basic Medical Sciences, Soochow University, Suzhou, Jiangsu, 215123, China.
Psychiatry Research
|June 21, 2025
Summary
Reduced N-acetyl aspartate (NAA) in the prefrontal cortex is linked to aggressive behaviors. Lower NAA levels correlate with increased aggression severity, suggesting a neurobiological marker for these behaviors.
Area of Science:
- Neuroscience
- Psychiatry
- Biochemistry
Background:
- Aggressive behaviors present significant risks to individuals and society.
- Altered neurochemical levels are increasingly implicated in aggressive behaviors, but findings are inconsistent.
- Existing research lacks a clear neurobiological correlate for aggression.
Purpose of the Study:
- To conduct a case-control meta-analysis to clarify neurochemical alterations in individuals with aggressive behaviors.
- To identify specific neurochemical changes associated with aggression using a comprehensive literature review.
Main Methods:
- A systematic literature search was performed across Web of Science, Medline, and PubMed.
- Forty eligible studies were included in the meta-analysis.
- Neurochemicals and brain regions associated with aggressive behaviors were analyzed.
Main Results:
- A significant reduction in N-acetyl aspartate (NAA) levels was observed in the prefrontal cortex of individuals exhibiting aggressive behaviors.
- NAA levels showed a negative correlation with the severity of aggressive behaviors.
- No statistically significant findings were observed for other examined neurochemicals.
Conclusions:
- Reduced prefrontal NAA levels may represent a neurobiological correlate of aggressive behaviors.
- These findings have implications for developing assessment tools and targeted interventions for aggression.
- Further research is warranted to explore the precise role of NAA in aggression.
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