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Updated: Jul 15, 2025

Brain Morphology of Cannabis Users With or Without Psychosis: A Pilot MRI Study
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Alternative beliefs in psychedelic drug users.

Alexander V Lebedev1,2, Kasim Acar3,4, Otilia Horntvedt3

  • 1Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden. alexander.lebedev@ki.se.

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Summary

Psychedelic use is linked to a greater acceptance of alternative facts and the belief that facts are politically influenced. However, psychedelic use did not correlate with favoring intuition over evidence.

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Area of Science:

  • Neuroscience
  • Psychology
  • Sociology

Background:

  • Classical psychedelics may induce lasting changes in personality and well-being.
  • Concerns exist regarding psychedelics' effects on information processing and factual belief.

Purpose of the Study:

  • To investigate the relationship between psychedelic use and the acceptance of alternative facts.
  • To examine how psychedelic use influences attitudes towards factual data and knowledge.

Main Methods:

  • A sample of 392 participants, including 233 with lifetime psychedelic experience, was analyzed.
  • Step-wise linear modeling was used to assess the effects of demographics, psychiatric conditions, and drug use.

Main Results:

  • Psychedelic use showed a moderate positive association with believing in alternative facts and facts being politically influenced.
  • No link was found between psychedelic use and favoring intuition over evidence.
  • Alcohol use was negatively associated with beliefs in alternative facts.

Conclusions:

  • Psychedelic use is associated with non-conformist thinking styles.
  • This association may stem from the drugs' psychological effects or reflect pre-existing unconventional beliefs.