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Related Experiment Videos

Caffeine and tremor.

W Koller, S Cone, G Herbster

    Neurology
    |January 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    Caffeine infrequently causes hand tremors in healthy individuals and does not worsen essential tremor or Parkinson's disease tremor. Studies show caffeine does not increase tremor symptoms in patients with these conditions.

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    Area of Science:

    • Neurology
    • Pharmacology

    Background:

    • Some individuals report coffee exacerbates tremor.
    • This perception is noted in healthy individuals, essential tremor, and Parkinson's disease patients.

    Purpose of the Study:

    • To investigate the objective effect of caffeine on tremor.
    • To determine if caffeine intake worsens tremor in essential tremor and Parkinson's disease.

    Main Methods:

    • Normal controls, essential tremor, and Parkinson's disease patients were assessed.
    • Participants received a single oral dose of caffeine (325 mg).
    • Tremor measurements were taken at 1, 2, and 3 hours post-ingestion.

    Main Results:

    • Caffeine did not significantly increase tremor in any group.

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  • Physiologic tremor, essential tremor, and parkinsonian tremor remained unchanged.
  • Only a small percentage of normal controls reported subjective worsening of tremor.

    • Conclusions:

    • Caffeine does not objectively exacerbate tremor in patients with essential tremor or Parkinson's disease.
    • Subjective reports of caffeine worsening tremor are infrequent and not supported by objective measurements.
    • Caffeine is unlikely to be a significant factor in tremor severity for most individuals.