Kava in Arnhem Land: a review of consumption and its social correlates

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Abstract
The debate about the effects and public health importance of the way Aboriginal people drink kava has been confounded by claims, based on anecdote, of imputed health effects. Anecdote and comment have promoted the perception that dosage levels among Aboriginal people are much greater than in Pacific island societies. In this paper we review published data about kava consumption, and evaluate it with respect to information collected from observation of one Aboriginal community in Arnhem Land (Northern Territory) where people tend to consume kavaat a steady tempo; 37g of kava powder containing around 3800mg of kava lactones in 670ml of water in an hour. The highest levels of consumption in Arnhem Land have been reported to be up to 900g/week of kava powder with heavy consumers drinking at least 610g/week, levels comparable to estimates for Pacific‐island societies. The significance of a steady drinking tempo means that an individual's weekly kava consumption relates directly to the amount of time spent drinking which, in turn, is correlated with categories of social setting of drinking (p < 0.0002). Lone drinkers appear to be the heaviest users while lowest consumption takes place in private domestic situations, where people enjoy kava as part of family group activities. Surrogates of consumption levels may be found in local socio‐economic circumstances. This approach may be useful when more direct measurement of consumption is difficult or impossible.

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