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Drinking and the brain: current evidence.

C R Delin1, T H Lee

  • 1Australian Wine Research Institute, Glen Osmond.

Alcohol and Alcoholism (Oxford, Oxfordshire)
|March 1, 1992
PubMed
Summary
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Moderate alcohol consumption may not harm the brain, contrary to concerns about a continuum of negative effects. Current evidence does not support a direct link between moderate drinking and long-term cognitive impairment or

Area of Science:

  • Neuroscience
  • Psychology
  • Toxicology

Background:

  • Excessive alcohol intake demonstrably harms brain function and neuropsychological performance.
  • The impact of moderate alcohol consumption on brain health and performance remains a critical question for social drinkers.

Purpose of the Study:

  • To investigate the hypothesis of a continuum of negative alcohol-related consequences from light to chronic drinking.
  • To review research on the behavioral, structural, and cellular effects of alcohol in both alcoholics and social drinkers.
  • To examine the 'hangover' hypothesis regarding cognitive impairment after blood alcohol concentration returns to zero.

Main Methods:

  • Review of behavioral studies on alcohol's effects.
  • Review of structural neuroimaging studies related to alcohol.

Related Experiment Videos

  • Review of cellular-level research on alcohol's impact.

    • Main Results:

    • Current evidence does not support a continuum of negative consequences across different drinking levels.
    • Research reviewed does not substantiate the 'hangover' hypothesis of persistent cognitive impairment.
    • Data on the long-term effects of moderate alcohol consumption is limited.

    Conclusions:

    • Neither the continuity hypothesis nor the 'hangover' hypothesis is supported by existing research.
    • Considerably more research is required to fully understand the effects of moderate alcohol consumption on the brain.
    • The long-term impact of moderate alcohol intake on cognitive function requires further investigation.