The neurobehavioural effects of kava

Cairney, Sheree, Maruff, Paul, and Clough, Alan R. (2002) The neurobehavioural effects of kava. Australian and New Zealand Journal of Psychiatry, 36 (5). pp. 657-662.

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Objective: This review considers the context in which kava is used, together with its underlying psychopharmacological mechanisms, to investigate the neurobehavioural effects associated with kava use.

Method: We conducted a systematic search using the computerized databases MEDLINE, OVID and PsychLIT for all articles containing any of the following words: kava, kavain, kawa and Piper methysticum. In the opinion of the authors, all articles from this collection containing data that could inform the neurological and cognitive sequelae of kava use were included for the purpose of this review.

Results: The use of kava occurs among indigenous populations in the South Pacific and in northern Australia, while also being used throughout the western world as a herbal medicine. Animal studies show that kava lactones alter neuronal excitation through direct interactions with voltage-dependent ion channels, giving rise to kava's muscle relaxant, anaesthetic, anxiolytic and anticonvulsive properties. Several isolated cases of psychotic and severe dystonic reactions following kava use suggest that kava also has psychoactive properties, yet there is no conclusive evidence that kava interferes with normal cognitive processes.

Conclusions: Kava is effective in the treatment of tension and anxiety. There may be riskfactors for severe motor and psychiatric responses to kava use, although these are not wellunderstood. Given the increasingly widespread use of kava, further investigation is necessary to gain an understanding of its immediate neuropsychiatric effects and long-term cognitive effects.

Item ID: 44891
Item Type: Article (Research - C1)
ISSN: 1440-1614
Keywords: anaesthesia, anxiolytic, choreoathetosis, kava, psychoactive
Date Deposited: 04 Aug 2016 05:18
FoR Codes: 11 MEDICAL AND HEALTH SCIENCES > 1117 Public Health and Health Services > 111701 Aboriginal and Torres Strait Islander Health @ 80%
11 MEDICAL AND HEALTH SCIENCES > 1117 Public Health and Health Services > 111799 Public Health and Health Services not elsewhere classified @ 20%
SEO Codes: 92 HEALTH > 9203 Indigenous Health > 920399 Indigenous Health not elsewhere classified @ 100%
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