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Coffee consumption and cognitive function among older adults.

Marilyn Johnson-Kozlow1, Donna Kritz-Silverstein, Elizabeth Barrett-Connor

  • 1Department of Family and Preventive Medicine, University of California, San Diego, La Jolla 92093, USA.

American Journal of Epidemiology
|October 25, 2002
PubMed
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Higher lifetime coffee consumption in women is linked to better cognitive function, particularly in those aged 80 and older. Caffeinated coffee intake showed positive associations with cognitive performance in women.

Area of Science:

  • Neuroscience
  • Epidemiology
  • Gerontology

Background:

  • Cognitive decline is a significant concern in aging populations.
  • The role of dietary factors, such as coffee consumption, in cognitive health requires further investigation.
  • Previous research on coffee and cognition has yielded mixed results.

Purpose of the Study:

  • To investigate the association between caffeinated and decaffeinated coffee intake and cognitive function in older adults.
  • To explore potential differences in this association based on sex and age.

Main Methods:

  • A community-based sample of 890 women and 638 men from the Rancho Bernardo Study (1988-1992) was analyzed.
  • Cognitive function was assessed using 12 standardized tests.
  • Lifetime and current coffee consumption were collected via questionnaires.

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Main Results:

  • In women, higher lifetime coffee consumption correlated with better performance on six of 12 cognitive tests.
  • Current caffeinated coffee intake was associated with improved performance on two tests in women.
  • No significant associations were found for men or for decaffeinated coffee intake in either sex.
  • Among women aged 80+, lifetime coffee intake showed a trend towards better performance on 11 tests.

Conclusions:

  • Lifetime and current caffeine exposure may benefit cognitive performance in women, especially the elderly.
  • The findings suggest a potential neuroprotective effect of coffee consumption in aging women.
  • Further research is warranted to elucidate the mechanisms behind this observed association.