Since childhood, Rachael Petersen had lived with an unexplainable sense of grief that no drug or talk therapy could entirely ease. So in 2017 she volunteered for a small clinical trial at Johns Hopkins University that was testing psilocybin, the active ingredient in magic mushrooms, for chronic depression. “I was so depressed,” Petersen, 29, said… Read More: Can psychedelics treat anorexia, depression? U.S. scientists get millions to… »