Professor Deepak D’Souza is a Professor of Psychiatry at Yale University School of Medicine where he is a leading expert in cannabis and in particular the relationship between cannabis and psychosis.

In addition to research, Professor D’Souza offers clinical expertise as a staff psychiatrist at VA Connecticut Healthcare System, where he directs the Neuropsychiatry Program for veterans with serious mental health disorders such as schizophrenia, bipolar disorder and depression.

Professor D’Souza runs the Schizophrenia Neuropharmacology Research Group at Yale (SNRGY), studying the pathophysiology of psychosis and cannabis, using a combination of brain imaging, pharmacological and electrophysiological approaches. Part of this work uses ‘psychopharmacological probes’, such as ketamine, amphetamine, THC and nicotine.

More recently, Professor D’Souza has been investigating the therapeutic potential of psychedelic compounds in the treatment of neuropsychiatric conditions, including depression and migraine.

Professor D'Souza's research has been funded by major US-based funders, including the National Institute of Mental Health (NIMH).

His work has been published in a number of prestigious psychiatry journals including Molecular Psychiatry, Lancet Psychiatry, Biological Psychiatry, American Journal of Psychiatry and Neuropsychopharmacology. He is a principal editor of Psychopharmacology, and a co-editor of the book Marijuana and Madness.