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Variables associated with cognitive function in elderly California Seventh-day Adventists

G E Fraser1, P N Singh, H Bennett

  • 1Department of Epidemiology and Biostatistics, Loma Linda University School of Public Health, CA, USA.

American Journal of Epidemiology
|June 15, 1996
PubMed
Summary

Higher calorie intake in middle age may accelerate cognitive decline. Lower educational status and psychotropic drug use also negatively impact cognitive function in the elderly.

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Area of Science:

  • Gerontology
  • Nutritional Science
  • Cognitive Neuroscience

Background:

  • Cognitive decline is a significant concern in aging populations.
  • Dietary habits and educational attainment are potential modifiable factors influencing cognitive health.
  • Understanding the long-term impact of lifestyle choices on cognitive function is crucial for public health.

Purpose of the Study:

  • To investigate the association between middle-age calorie consumption and cognitive function in later life.
  • To examine the relationship between educational status and cognitive performance in the elderly.
  • To assess the impact of psychotropic drug use on cognitive function, particularly in impaired individuals.

Main Methods:

  • A cohort of 99 white, non-Hispanic Seventh-day Adventists over 75 years old in 1991 was studied.

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  • Dietary habits and education were assessed in 1976.
  • Cognitive function was measured using the Mini-Mental State Examination (MMSE) in 1991.

    • Main Results:

    • Higher calorie intake in 1976 was associated with lower MMSE scores in 1991 (p=0.03).
    • This association was stronger when excluding subjects with prior stroke or Parkinson's disease.
    • Lower educational status was linked to reduced MMSE scores, especially in the very elderly.
    • Psychotropic drug use showed a potent negative association with MMSE scores in cognitively impaired individuals (p=0.004).

    Conclusions:

    • Increased calorie consumption in middle age may contribute to accelerated cognitive decline.
    • Educational attainment is a significant factor in maintaining cognitive function in older adults.
    • Physicians should exercise caution when prescribing psychotropic drugs to cognitively impaired elderly patients due to potential adverse effects.