Effects of ayahuasca on mental health and quality of life in naïve users: A longitudinal and cross-sectional study combination
José Carlos Bouso, Daniel Jiménez‐garrido, María de Lourdes Gómez-sousa, Genís Oña, Rafael G. Dos Santos, Jaime E. C. Hallak, Miguel Ángel Alcázar‐córcoles
Scientific Reports March 5, 2020 DOI: 10.1038/s41598-020-61169-x
Summary
Over 80% of individuals with psychiatric disorders experienced clinical improvements lasting six months after using Ayahuasca, a traditional hallucinogen. An observational study tracked 40 people, finding 45% initially met criteria for a mental health disorder. Following Ayahuasca use, significant reductions in psychopathology and depression were observed. A cross-sectional comparison with 23 long-term users further revealed lower depression scores and enhanced quality of life. This suggests Ayahuasca's potential in psychiatry and medicine, offering insights for psychology and future psychedelics and drug studies.
Abstract
Abstract Ayahuasca is a hallucinogenic decoction used as a traditional medicine in several Amazonian regions. The ritualistic use of ayahuasca has spread throughout many countries, making it necessary to study its risks and benefits. Two sub-studies were designed for this investigation. In sub-study 1, a psychiatric interview and a battery of questionnaires were administered to subjects (n = 40) before their first ayahuasca use. Two follow-ups were conducted at 1 and 6 months. In sub-study 2, the same interview and battery of questionnaires were administered to long-term ayahuasca users (n = 23) and their scores were compared with those of the ayahuasca-naïve group. In the first assessment, nearly half (45%) of the naïve users were found to meet the diagnostic criteria for a psychiatric disorder. After the ayahuasca use, more than 80% of those subjects showed clinical improvements that persisted at 6 months. The questionnaires showed significant reductions in depression and psychopathology. Regarding sub-study 2, long-term users showed lower depression scores, and higher scores for self-transcendence and quality of life, as compared to their peers in sub-study 1. Further controlled and observational naturalistic studies assessing the eventual risks and potential benefits of ayahuasca are warranted.