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Factors associated with caffeine consumption.

Carolyn F Brice1, Andrew P Smith

  • 1Centre for Occupational and Health Psychology, School of Psychology, Cardiff University, PO Box 901, Cardiff CF11 3YG, UK.

International Journal of Food Sciences and Nutrition
|February 1, 2002
PubMed
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This study found coffee is the main source of caffeine, with consumption varying by time of day. Psychological factors showed little influence, but smoking correlated with higher caffeine intake.

Area of Science:

  • Nutritional Science
  • Behavioral Science

Background:

  • Caffeine is a widely consumed psychoactive substance.
  • Understanding factors influencing caffeine consumption is crucial for public health.
  • Previous research has explored various determinants of caffeine intake.

Purpose of the Study:

  • To identify key factors associated with caffeine consumption patterns.
  • To investigate the relationship between time of day and caffeine intake.
  • To explore the influence of psychological and behavioral factors on caffeine use.

Main Methods:

  • Analysis of self-reported data on caffeine intake.
  • Correlation analysis to identify related factors.
  • Examination of consumption patterns across different times of the day.

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Main Results:

  • Coffee identified as the primary source of caffeine.
  • Caffeine consumption significantly varies with the time of day.
  • Limited evidence for psychological traits influencing consumption; smoking showed a positive correlation with caffeine intake.

Conclusions:

  • Caffeine consumption, primarily from coffee, is timed to manage alertness levels (e.g., counteracting sleep inertia, post-lunch dip).
  • Psychological and psychosocial factors appear to have minimal impact on caffeine consumption.
  • Smoking behavior is associated with higher caffeine intake.