There was a raft of research on psychedelic drugs back in the 1960s, and then it stopped. But researchers are once again getting interested. The New Yorker has an article about this revival. Here's three paragraphs:
Every guided psychedelic journey is different, but a few themes seem to recur. Several of the cancer patients I interviewed at N.Y.U. and Hopkins described an experience of either giving birth or being born. Many also described an encounter with their cancer that had the effect of diminishing its power over them. Dinah Bazer, a shy woman in her sixties who had been given a diagnosis of ovarian cancer in 2010, screamed at the black mass of fear she encountered while peering into her rib cage: “Fuck you, I won’t be eaten alive!” Since her session, she says, she has stopped worrying about a recurrence—one of the objectives of the trial.This long post has a brief account of an LSD trip I took back in the early 1970s.
Great secrets of the universe often become clear during the journey, such as “We are all one” or “Love is all that matters.” The usual ratio of wonder to banality in the adult mind is overturned, and such ideas acquire the force of revealed truth. The result is a kind of conversion experience, and the researchers believe that this is what is responsible for the therapeutic effect.
Subjects revelled in their sudden ability to travel seemingly at will through space and time, using it to visit Elizabethan England, the banks of the Ganges, or Wordsworthian scenes from their childhood. The impediment of a body is gone, as is one’s identity, yet, paradoxically, a perceiving and recording “I” still exists. Several volunteers used the metaphor of a camera being pulled back on the scene of their lives, to a point where matters that had once seemed daunting now appeared manageable—smoking, cancer, even death. Their accounts are reminiscent of the “overview effect” described by astronauts who have glimpsed the earth from a great distance, an experience that some of them say permanently altered their priorities. Roland Griffiths likens the therapeutic experience of psilocybin to a kind of “inverse P.T.S.D.”—“a discrete event that produces persisting positive changes in attitudes, moods, and behavior, and presumably in the brain.”