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 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.
Psilocybin, a plant alkaloid, exerts its influence on some of the same brain receptors that respond to the neurotransmitter serotonin. Mushrooms containing psilocybin have been used in some cultures for hundreds of years or more for religious, divinatory and healing purposes.
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.