Original guest post by Kenneth Zysk (University of Copenhagen)I this paper I should like to revisit a problem in the history of Indian medicine, which is yet to find a satisfactory resolution. The issue centres on when and where Āyurveda came into existence and from where all or part of it could have derived, in a word, the origins of Āyurveda.The Origins of ĀyurvedaAt the core of classical Āyurveda stands the aetiological theory of the three doṣas (tridoṣa), broadly defined as defilements of