adamaddictionalcoholalexandrewassistedayahuascabenblackbrucecannabiscarecarolcharleschriscocainedamedarrendaviddennisdepressiondmtdrugsethnopharmacologyformergillianhealthjamesjayjohnjoshkateketaminelivelsdmckennamdmamediamedicalmedicinemescalinemichaelmikemorganmpmusicneillnicholsnormanpalliativepeoplepeterpolicyprofprofessorpsilocybinpsychedelicpsychedelicspsychotherapyresearchrobinrobinsonruffellshortershowsimonstevenstherapytraumaukusveteranswisdomyearsyoung