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Related Experiment Video

Updated: Apr 16, 2026

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Adolescent heavy drinkers' amplified brain responses to alcohol cues decrease over one month of abstinence.

Ty Brumback1, Lindsay M Squeglia2, Joanna Jacobus3

  • 1University of California San Diego, Department of Psychiatry, La Jolla, CA, USA.

Addictive Behaviors
|March 22, 2015
PubMed
Summary
This summary is machine-generated.

Adolescent heavy drinkers show heightened brain reactivity to alcohol cues. Abstaining from alcohol for one month reduced this reactivity, indicating brain plasticity in young heavy alcohol users.

Keywords:
AdolescenceAlcoholAnterior cingulate cortexCerebellumCue reactivityHeavy episodic drinking

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Area of Science:

  • Neuroscience
  • Adolescent development
  • Addiction research

Background:

  • Heavy drinking in adolescence alters neural development and increases reactivity to alcohol cues.
  • Neural mechanisms of alcohol cue reactivity in adolescents are poorly understood.
  • This study investigates brain activity changes in response to alcohol cues before and after monitored abstinence.

Purpose of the Study:

  • To identify changes in blood-oxygen-level-dependent (BOLD) signal during an alcohol cue reactivity task in adolescents with heavy episodic drinking (HD) compared to controls (CON).
  • To examine the effects of one month of monitored alcohol abstinence on neural cue reactivity in HD adolescents.

Main Methods:

  • Recruited adolescents with HD (n=22) and CON (n=16) aged 16.0-18.9 years.
  • Utilized functional Magnetic Resonance Imaging (fMRI) with an alcohol cue reactivity task at baseline and after 28 days of monitored abstinence.
  • Analyzed BOLD signal changes using repeated-measure ANOVA, focusing on predefined regions of interest.

Main Results:

  • Heavy drinking adolescents (HD) showed significantly greater BOLD activation to alcohol cues compared to controls (CON) in key brain regions including the striatum, anterior cingulate cortex, cerebellum, and thalamus.
  • At baseline, HD participants exhibited greater cue-induced BOLD activation in the left anterior cingulate cortex and right cerebellum compared to CON.
  • Following one month of abstinence, these group differences in BOLD activation in the anterior cingulate cortex and cerebellum diminished to non-significance.

Conclusions:

  • Adolescent heavy drinkers exhibit heightened neural reactivity to alcohol cues, even before a formal alcohol use diagnosis.
  • A month of monitored abstinence significantly reduced alcohol cue reactivity in the brains of adolescent heavy drinkers.
  • These findings demonstrate the brain's plasticity in adolescents and suggest potential targets for prevention and intervention strategies for heavy alcohol use.