Full Professor of Psychiatry, Department of Neuroscience and Behavioral Sciences, Faculty of Medicine of Ribeirao Preto (FMRP), University of São Paulo. Adjunct Professor at the University of Alberta - Canada.
Coordinator of the INCT Translational in Medicine at CNPq.
Head of the Psychiatry Division of the Department of Neuroscience and Behavioral Sciences at FMRP, University of São Paulo.
JH coordinates several clinical outpatient clinics at the University General Hospital of FMRP, University of São Paulo and the Laboratory of Clinical Psychopharmacology and Neuroimaging, with emphasis on studies investigating the therapeutic properties of cannabinoid derivatives and hallucinogenic substances, particularly ayahuasca and ibogaine.