Julio Rivera spent two decades helping people exorcise dark energy through psychedelic journeys — until one almost ended his life.

Analysis of hair from 22 mummies found in southern Peru has revealed the earliest known use of San Pedro cactus, a source of mescaline, and the psychoactive plants that make up the drug ayahuasca. The ...

Regulators are beginning to recognize the therapeutic potential of once stigmatized compounds for mental health disorders like treatment-resistant depression (TRD) and post-traumatic stress disorder ...