The effects of chronic marijuana use on circadian entrainment

Lauren N. Whitehurst, Kethera Fogler, Kate Hall, Matthew Hartmann, Jeff Dyche

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


Animal literature suggests a connection between marijuana use and altered circadian rhythms. However, the effect has not yet been demonstrated in humans. The present study examined the effect of chronic marijuana use on human circadian function. Participants consisted of current users who reported smoking marijuana daily for at least a year and non-marijuana user controls. Participants took a neurocognitive assessment, wore actigraphs and maintained sleep diaries for three weeks. While no significant cognitive changes were found between groups, data revealed that chronic marijuana use may act as an additional zeitgeber and lead to increased entrainment in human users.

Original languageEnglish
Pages (from-to)561-567
Number of pages7
JournalChronobiology International
Issue number4
StatePublished - May 1 2015

Bibliographical note

Publisher Copyright:
© 2015 Informa Healthcare USA, Inc. All rights reserved.


  • Cannabis
  • Circadian rhythms
  • Entrainment
  • Marijuana
  • Zeitgeber

ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)


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