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This lesson delves into the concept of protection and deprotection of a functional group fundamental to synthetic organic chemistry. These phenomena are explained in the context of aliphatic and aromatic alcohols.
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Related Experiment Video

Updated: Feb 12, 2026

Modeling Alcohol Consumption in Rodents Using Two-Bottle Choice Home Cage Drinking and Microstructural Analysis
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Light Alcohol Consumption Does Not Protect Cognitive Function: A Longitudinal Prospective Study.

Linda B Hassing1

  • 1Department of Psychology, University of Gothenburg, Gothenburg, Sweden.

Frontiers in Aging Neuroscience
|April 11, 2018
PubMed
Summary
This summary is machine-generated.

Moderate alcohol consumption may not improve cognitive function. Previous studies may have been biased by comparing drinkers to unhealthy non-drinkers. This study found a dose-response relationship between alcohol intake and lower cognitive performance.

Keywords:
abstainer biasalcohol consumptioncognitive aginglongitudinal studymemory

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Area of Science:

  • Neuroscience
  • Public Health
  • Gerontology

Background:

  • Light to moderate alcohol consumption is often linked to improved health and cognitive function.
  • This association may be a result of bias, as non-drinkers often abstain due to pre-existing health issues, creating an unhealthy control group.
  • Previous research may not accurately reflect alcohol's true impact on cognition due to this control group bias.

Purpose of the Study:

  • To investigate the relationship between alcohol consumption and cognitive performance while accounting for control group bias.
  • To examine the dose-response association between alcohol intake and cognitive aging.
  • To determine if light to moderate alcohol intake offers cognitive benefits when non-drinkers are excluded from analysis.

Main Methods:

  • Utilized data from the Swedish Twin Registry, including midlife alcohol intake and longitudinal cognitive assessments over 25 years (N=486).
  • Cognitive function was measured using the Mini Mental State Examination (MMSE), episodic memory, semantic memory, and spatial ability tests.
  • Growth curve models were employed to analyze the association between midlife alcohol consumption and cognitive performance in old age, adjusting for covariates.

Main Results:

  • A significant negative dose-response association was found between midlife alcohol intake and performance on the MMSE and episodic memory tests.
  • Higher alcohol consumption in midlife predicted lower cognitive performance in old age.
  • No significant associations were observed between alcohol intake and semantic memory or spatial ability.

Conclusions:

  • Contrary to previous findings, this study indicates that alcohol intake is associated with lower cognitive performance in a dose-response manner, even at low levels.
  • The perceived cognitive benefits of moderate drinking may be an artifact of comparing drinkers to an unhealthy control group of non-drinkers.
  • Light alcohol consumption does not appear to protect cognitive function and may, in fact, be detrimental.