[Tim Leary cut the prison recidivism rate from 70% to 10% using Psilocybin1.]
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After 35 Years I Tried ‘Magic’ Mushrooms Again—Here’s What Happened a dose of 20mg per 70kg of body weight was the “sweet spot,” tending to bring subjects in his experimental sessions most of the positive experiences and all but eliminating the negative fear/anxiety responses higher doses sometimes triggered. In further research I discovered that each gram of dried P. cubensis equaled approximately 6 milligrams of psilocybin (though some sources said it varied greatly from batch to batch), which meant the 3.5 grams of the dried stuff I possessed — about 21 milligrams — hit that “sweet spot” almost exactly.
1. Flashbacks by Tim Leary p.83-90.