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Sex Moderates Relationships Between Alcohol Use Disorder, Brain Structure, and Perceived Emotional Support in Young
Journal of Addiction Medicine
|August 12, 2025
Summary
Social support aids alcohol use disorder (AUD) recovery. Neuroimaging reveals that in women with AUD, greater gray matter volume in specific brain areas correlates with less perceived emotional support, unlike in men.
Area of Science:
- Neuroimaging
- Neurobiology
- Psychiatry
Background:
- Social support is crucial for health and recovery from alcohol use disorder (AUD).
- Neuroanatomical correlates of social support are not well understood, especially considering sex and AUD differences.
- Both sex and AUD history influence social support experiences and brain structure.
Purpose of the Study:
- To investigate the neuroanatomical basis of perceived emotional and instrumental support.
- To examine these relationships as a function of sex and lifetime AUD status.
- To identify potential sex-specific neural mechanisms underlying social support in AUD.
Main Methods:
- Utilized Human Connectome Project data including T1-weighted MRI scans.
- Quantified gray-matter volume in relevant brain regions for 954 young adults (522 women, 432 men).
- Analyzed perceived emotional and instrumental support via self-report scales and conducted interaction analyses based on sex and AUD status.
Main Results:
- Found an inverse association between gray-matter volume in the left rostral anterior cingulate cortex and left lateral orbitofrontal cortex and perceived emotional support in women with lifetime AUD.
- Larger gray-matter volumes in these regions were linked to lower perceived emotional support exclusively in women with AUD.
- No significant associations were observed for instrumental support or in men, regardless of AUD status.
Conclusions:
- Demonstrated significant sex differences in the brain-behavior relationships of perceived emotional support, specifically linked to AUD status.
- Suggests that the neural underpinnings of social support in AUD may differ between women and men.
- Highlights the need for further investigation into sex-specific social support mechanisms in AUD interventions.
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