Based on this and other evidence, Brabec de Mori argues that ayahuasca diffused through the Peruvian Amazon in the past 300 years. It is likely older among Tukanoan peoples further north, who, he suspects, transmitted the practice to populations missionised early in the lowlands. Yet in the regions most frequented by tourists, it seems to be a relative novelty. Brabec de Mori isn’t the first to make the argument – the anthropologist Peter Gow proposed something similar in 1994 – but he, more than anyone else, has found the anthropological data to support it.
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