Quitting alcohol may prime the brain for relapse

Recent research suggests that quitting alcohol may prime the brain for relapse in some individuals. The study, conducted on mice, discovered that abstinence from alcohol can lead to changes in a specific brain region, potentially increasing the risk of relapse. Researchers observed that mice forced to abstain from alcohol developed a greater tolerance for increasingly bitter alcohol, drinking larger quantities despite the bitter taste.

Furthermore, these mice exhibited heightened activity in a brain area called the bed nucleus of the stria terminalis (BNST), which is associated with alcohol use disorder symptoms like anxiety and depression. Notably, abstinent mice with increased activity in the BNST had more than double the activity compared to those without forced abstinence.

This heightened BNST activity was observed even before the mice were given access to the bitter alcohol, hinting at the possibility of identifying individuals at risk of relapse through BNST activity screening. While alcohol misuse is a significant public health issue in the United States, with over 30 million people in need of treatment, clinicians struggle to predict who will require help.

Despite FDA-approved treatments for alcohol use disorder, the number of diagnosed cases has nearly doubled since 1999. Understanding the role of the BNST in alcohol-related behavior and its potential as a screening tool could lead to improved risk assessment and targeted treatment strategies for those vulnerable to relapse.