Mushroom Study

Notably, 61% of volunteers considered the psilocybin experience during either or both the [highest dosage] sessions to have been the single most spiritually significant of their lives, with 83% rating it in their top five. Consistent with this, 94% and 89% of volunteers, respectively, indicated that the experiences on those same sessions increased their well-being or life satisfaction and positively changed their behavior at least moderately….

http://motherjones.com/kevin-drum/2011/06/magic-mushrooms-safe-still-illegal