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Caffeine and the common cold

A Smith1, M Thomas, K Perry

  • 1Department of Psychology, University of Bristol, UK. Andy.P.Smith@bris.ac.uk

Journal of Psychopharmacology (Oxford, England)
|January 1, 1997
PubMed
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Caffeinated and decaffeinated coffee improved alertness and psychomotor performance in common cold patients. This suggests alertness-boosting substances can alleviate cold-related malaise.

Area of Science:

  • Neuroscience
  • Pharmacology
  • Human Physiology

Background:

  • Common cold often causes malaise, characterized by reduced alertness and slower psychomotor performance.
  • The impact of common beverages on cold symptoms is not fully understood.

Purpose of the Study:

  • To investigate if caffeinated and decaffeinated coffee can alleviate malaise associated with the common cold.
  • To compare the effects of caffeine, decaffeinated coffee, and fruit juice on cold symptoms.

Main Methods:

  • 100 volunteers were initially tested when healthy.
  • 46 volunteers who developed colds were re-tested, along with a healthy control group.
  • Participants consumed caffeinated coffee, decaffeinated coffee, or fruit juice, with performance assessed pre- and post-consumption.

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Main Results:

  • Volunteers with colds reported decreased alertness and slower psychomotor performance.
  • Both caffeinated and decaffeinated coffee significantly improved alertness and performance in cold patients.
  • Improvements in cold patients approached the levels observed in the healthy control group.

Conclusions:

  • Substances that increase alertness can effectively mitigate the malaise associated with the common cold.
  • Sensory nerve stimulation may also offer benefits for managing cold symptoms.