Study Finds Perfect Dose for Medical 'Shrooms Participants say their minds were blown, man By Kevin Spak, Newser Staff Posted Jun 16, 2011 2:14 PM CDT 34 comments Comments Magic mushrooms are being weighed and packaged at the Procare farm in Hazerswoude, central Netherlands on this Aug. 3, 2007 file photo. (AP Photo/Peter Dejong, File) (Newser) – Forget medical marijuana—are you ready for medical mushrooms? The popular psychedelic is believed to be a useful tool for treating anxiety, depression, PTSD, and more, and now a group of researchers at John Hopkins University School of Medicine say they’ve found the perfect dose to produce long-lasting effects with a minimal risk of a “bad trip.” They’ll reveal the exact dosage when the study is published later this week. Volunteers were given various doses of the drug in a controlled, supportive setting over four sessions. The results were overwhelmingly positive—a year later, 94% ranked it as one of the five most spiritual experiences of their lives, and 89% reported long-term positive changes in their behavior and mental well-being. “I’m not afraid to die anymore,” one participant tells Yahoo’s Lookout blog. “I think my heart is more open to all interactions with other people,” another said.