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Alcoholic cognitive deterioration and nutritional deficiencies

J A Molina1, F Bermejo, T del Ser

  • 1Department of Neurology, 12 de Octubre University Hospital, Madrid, Spain.

Acta Neurologica Scandinavica
|May 1, 1994
PubMed
Summary

Chronic alcohol use can lead to cognitive impairment, but thiamine deficiency is not the primary cause. Alcohol-related cognitive deterioration is more strongly linked to alcohol intake duration and education levels.

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Area of Science:

  • Neuroscience
  • Nutritional Psychiatry
  • Clinical Psychology

Background:

  • Chronic alcohol consumption is frequently associated with cognitive deficits, often linked to Wernicke-Korsakoff encephalopathy and suspected nutritional deficiencies.
  • Alcoholic Cognitive Deterioration (ACD) is a recognized condition impacting intellectual and memory functions in long-term alcohol users.

Purpose of the Study:

  • To investigate the relationship between alcoholic cognitive deterioration (ACD) and specific nutritional and vitamin deficiencies in chronic alcoholic patients.
  • To determine if serum thiamine levels are a significant factor in the cognitive impairments observed in ACD.

Main Methods:

  • Cognitive assessments including intelligence and memory tests were administered to 54 chronic alcoholic patients and 30 healthy controls.

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  • Serum levels of thiamine, folic acid, vitamins B12, A, and E, along with nutritional indexes, were measured in participants.
  • Stepwise regression analysis was employed to identify predictive factors for cognitive performance.

    • Main Results:

    • Alcoholic patients demonstrated significantly lower scores in intellectual and visuospatial tasks compared to controls, but not in verbal memory.
    • Lower serum thiamine levels were observed in alcoholics, but levels of other tested vitamins remained comparable.
    • Correlation analyses showed weak associations between serum thiamine and cognitive performance; duration of alcohol intake and education level were stronger predictors of cognitive function.

    Conclusions:

    • Serum thiamine deficiency does not appear to be the primary cause of cognitive impairment in chronic alcoholic patients.
    • The duration of alcohol consumption and educational background are more significant factors influencing intellectual and memory performance in ACD.