Brain activity in abstinent mice may predict alcohol relapse risk
Researchers found that mice forced to abstain from alcohol showed increased activity in the bed nucleus of the stria terminalis (BNST) before attempting to drink. This activity was more than double in mice that developed aversion-resistant drinking. The finding could lead to screening for relapse vulnerability in humans.
The bed nucleus of the stria terminalis sits deep near the brain's center and has previously been linked to anxiety and depression symptoms in alcohol use disorder. In the study, abstinent mice that reentered their former drinking environment attempted to drink even from water-only spouts, with BNST activity appearing before any alcohol access. Mice that developed aversion-resistant drinking showed more than double the BNST activity of non-abstinent controls.
Alcohol-related deaths in 2024 were 4.5 times higher than opioid-related deaths, yet public perception of alcohol's dangers remains muted. Roughly 10% of Americans who consume alcohol develop alcohol use disorder, totaling nearly 30 million people needing treatment. Diagnoses have doubled since 1999, and researchers still do not know which specific BNST cell populations drive the observed activity.
This research could eventually give clinicians a biological marker for relapse vulnerability, potentially shifting alcohol treatment from reactive to preventive care. If BNST screening proves viable in humans, the roughly 30 million Americans with alcohol use disorder might receive earlier, more targeted intervention. However, translating rodent findings to human behavior carries inherent uncertainty, and any screening tool would require extensive validation before clinical use. The societal benefit could be substantial, given that alcohol-related deaths far exceed opioid fatalities and treatment demand continues rising.