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Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication
09:26

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Published on: February 6, 2019

Moderate alcohol consumption and cognitive risk.

Edward J Neafsey1, Michael A Collins

  • 1Department of Molecular Pharmacology and Therapeutics, Loyola University Chicago, Stritch School of Medicine, Maywood, IL, USA.

Neuropsychiatric Disease and Treatment
|August 23, 2011
PubMed
Summary
This summary is machine-generated.

Moderate alcohol consumption may benefit cognitive function, particularly in older adults, reducing the risk of dementia and cognitive impairment. Heavy drinking, however, shows no significant benefit and may increase risk.

Keywords:
Alzheimer’s diseasedementiadrinking

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Area of Science:

  • Neuroscience
  • Gerontology
  • Public Health

Background:

  • Research on moderate alcohol consumption and cognition spans decades, with evolving methodologies and subject demographics.
  • Early studies (1977-1997) primarily used neuropsychological evaluations in younger adults, yielding mixed results.
  • Later research (1998-present) employs mental status exams in older adults, revealing a more consistent pattern of cognitive benefits.

Purpose of the Study:

  • To synthesize existing research on the relationship between moderate alcohol intake and cognitive function.
  • To evaluate the impact of moderate drinking on various cognitive outcomes, including dementia and cognitive impairment.
  • To identify potential moderating factors such as age, drinking patterns, and genetic predispositions.

Main Methods:

  • A comprehensive review and meta-analysis of 143 studies examining moderate alcohol consumption and cognition.
  • Categorization of studies into risk ratio analyses and qualitative assessments of cognitive function.
  • Analysis of data stratified by age groups, drinking levels (light, moderate, heavy), alcohol type, and apolipoprotein E genotype.

Main Results:

  • Moderate alcohol consumption is associated with a reduced risk of dementia and cognitive impairment (risk ratio of 0.77).
  • Benefits were observed across all dementia types and cognitive impairment, but not significantly for cognitive decline.
  • Light to moderate drinking showed benefits, while heavy drinking was linked to a nonsignificantly higher risk. Wine showed a potential benefit over beer or spirits, though this requires further investigation.
  • The apolipoprotein E epsilon 4 allele's interaction with moderate drinking requires further study. Benefits were observed in both men and women across multiple countries.

Conclusions:

  • Light to moderate alcohol consumption appears safe for cognition in younger individuals and beneficial for reducing dementia and cognitive impairment risk in older adults.
  • Further research is needed to clarify the effects of different alcohol types and the role of genetic factors like apolipoprotein E.
  • The findings suggest a nuanced relationship between alcohol consumption and cognitive health, emphasizing moderate intake for potential benefits in aging populations.