LSD - Psychedelics and Mental Health A Population Study Teri S Krebs Pal-rjan Johansen Department of Neuroscience Faculty of Medicine Norwegian

LSD - Psychedelics and Mental Health A Population Study...

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Psychedelics and Mental Health: A Population Study Teri S. Krebs*, Pa˚l-Ørjan Johansen Department of Neuroscience, Faculty of Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway Abstract Background: The classical serotonergic psychedelics LSD, psilocybin, mescaline are not known to cause brain damage and are regarded as non-addictive. Clinical studies do not suggest that psychedelics cause long-term mental health problems. Psychedelics have been used in the Americas for thousands of years. Over 30 million people currently living in the US have used LSD, psilocybin, or mescaline. Objective: To evaluate the association between the lifetime use of psychedelics and current mental health in the adult population. Method: Data drawn from years 2001 to 2004 of the National Survey on Drug Use and Health consisted of 130,152 respondents, randomly selected to be representative of the adult population in the United States. Standardized screening measures for past year mental health included serious psychological distress (K6 scale), mental health treatment (inpatient, outpatient, medication, needed but did not receive), symptoms of eight psychiatric disorders (panic disorder, major depressive episode, mania, social phobia, general anxiety disorder, agoraphobia, posttraumatic stress disorder, and nonaffective psychosis), and seven specific symptoms of non-affective psychosis. We calculated weighted odds ratios by multivariate logistic regression controlling for a range of sociodemographic variables, use of illicit drugs, risk taking behavior, and exposure to traumatic events. Results: 21,967 respondents (13.4% weighted) reported lifetime psychedelic use. There were no significant associations between lifetime use of any psychedelics, lifetime use of specific psychedelics (LSD, psilocybin, mescaline, peyote), or past year use of LSD and increased rate of any of the mental health outcomes. Rather, in several cases psychedelic use was associated with lower rate of mental health problems. Conclusion: We did not find use of psychedelics to be an independent risk factor for mental health problems. Citation: Krebs TS, Johansen P-Ø (2013) Psychedelics and Mental Health: A Population Study. PLoS ONE 8(8): e63972. doi:10.1371/journal.pone.0063972 Editor: Lin Lu, Peking University, China Received August 19, 2012; Accepted April 11, 2013; Published August 19, 2013 Copyright: 2013 Krebs, Johansen. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Funding: Both authors were supported by the Research Council of Norway (grant 185924). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
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