All participants had had negative psychedelic experiences since the goal was not to determine the prevalence of negative experiences among all psychedelic users but rather to examine in-depth the traits of those with these experiences. “Almost half no longer take psychedelic drugs, and in some instances, respondents reported feeling significantly harmed by their psychedelic experience and expressed regret over ever trying these substances,” the researchers write. The researchers write that their ultimate goal is not to question the risks or benefits of psychedelics but to provide support for those who do experience long-term harm from psychedelic experiences.