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Related Experiment Videos

The moon and madness reconsidered.

C L Raison1, H M Klein, M Steckler

  • 1Department of Psychiatry and Biobehavioral Sciences, Neuropsychiatric Institute and Hospital, University of California-Los Angeles, 90024-1759, USA. craison@mednet.ucla.edu

Journal of Affective Disorders
|June 11, 1999
PubMed
Summary

Despite persistent belief, scientific research shows no full moon psychiatric disturbance link. A sleep deprivation hypothesis explains historical associations, suggesting lunar light disrupted sleep before modern lighting.

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Area of Science:

  • Psychiatry
  • Sleep Medicine
  • History of Medicine

Background:

  • The belief linking the full moon to psychiatric disturbances, including insanity and epilepsy, is ancient and widespread.
  • Despite this enduring belief, 50 years of scientific research has consistently failed to demonstrate a direct association between lunar phases and psychiatric conditions.
  • Previous research has not adequately explained the historical persistence of the lunar-psychiatric connection.

Purpose of the Study:

  • To explore the historical roots of the belief in the moon's influence on mental disorders.
  • To propose and critique potential mechanisms for lunar influence on the mind.
  • To reconcile historical beliefs with modern scientific findings by introducing a novel hypothesis.

Main Methods:

Related Experiment Videos

  • Historical analysis of beliefs surrounding lunar influence on mental health.
  • Critique of proposed biological mechanisms for lunar effects.
  • Development of a sleep-deprivation hypothesis to explain historical associations.

    • Main Results:

    • The study traces the historical belief in lunar-induced mental disturbances.
    • It critiques existing theories on lunar influence.
    • A novel hypothesis suggests that pre-modern nocturnal illumination from the full moon caused sleep deprivation, potentially triggering mania or seizures in susceptible individuals.

    Conclusions:

    • Modern lighting has attenuated the lunar effect on sleep-wake cycles, explaining the lack of association in contemporary studies.
    • The sleep-deprivation hypothesis offers a plausible explanation for the historical link between the full moon and psychiatric disturbances.
    • The proposed hypothesis is amenable to empirical testing and falsification.