In a follow-up to research showing that psilocybin, a substance contained in "sacred mushrooms," produces substantial spiritual effects, a Johns Hopkins team reports that those beneficial effects appear to last more than a year.
Writing in the Journal of Psychopharmacology, the Johns Hopkins researchers note that most of the 36 volunteer subjects given psilocybin, under controlled conditions in a Hopkins study published in 2006, continued to say 14 months later that the experience increased their sense of well-being or life satisfaction.
"Most of the volunteers looked back on their experience up to 14 months later and rated it as the most, or one of the five most, personally meaningful and spiritually significant of their lives," says lead investigator Roland Griffiths, Ph.D., a professor in the Johns Hopkins departments of Psychiatry and Behavioral Sciences and Neuroscience.
In a related paper, also published in the Journal of Psychopharmacology, researchers offer recommendations for conducting this type of research.
The guidelines caution against giving hallucinogens to people at risk for psychosis or certain other serious mental disorders. Detailed guidance is also provided for preparing participants and providing psychological support during and after the hallucinogen experience. These "best practices" contribute both to safety and to the standardization called for in human research.
"With appropriately screened and prepared individuals, under supportive conditions and with adequate supervision, hallucinogens can be given with a level of safety that compares favorably with many human research and medical procedures," says that paper's lead author, Mathew W. Johnson, Ph.D., a psychopharmacologist and instructor in the Johns Hopkins Department of Psychiatry and Behavioral Sciences.
The two reports follow a 2006 study published in another journal, Psychopharmacology, in which 60 percent
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