Leary returned from Mexico to Harvard in 1960, and he and his associates (notably Richard Alpert, later known as Ram Dass ) began a research program known as the Harvard Psilocybin Project . The goal was to analyze the effects of psilocybin on human subjects (first prisoners, and later Andover Newton Theological Seminary students) from a synthesized version of the drug (which was legal at the time), one of two active compounds found in a wide variety of hallucinogenic mushrooms, including Psilocybe mexicana . The compound in question was produced by a process developed by Albert Hofmann of Sandoz Pharmaceuticals , who was famous for synthesizing LSD. 
If a young man's low testosterone is a problem for a couple trying to get pregnant , gonadotropin injections may be an option in some cases. These are hormones that signal the body to produce more testosterone. This may increase the sperm count. Hedges also describes implantable testosterone pellets, a relatively new form of treatment in which several pellets are placed under the skin of the buttocks, where they release testosterone over the course of about three to four months. Injections and nasal gels may be other options for some men.