Journal of Psychoactive Drugs
June 1, 2005
Evelyn Doering-Silveira, Charles S. Grob, Marlene Dobkin De Rios et al.
122 citations
Ritual use of ayahuasca within the context of the Brazilian ayahuasca churches often starts during late childhood or early adolescence. Premature access to psychoactive drugs may represent a risk factor for drug misuse. Conversely, religious affiliation seems to play a protective role in terms of substance abuse. The objective of this study was to describe patterns of drug use in a sample of...
Journal of Psychoactive Drugs
June 1, 2005
Dartiu Xavier Da Silveira, Charles S. Grob, Marlene Dobkin De Rios et al.
111 citations
Ayahuasca is believed to be harmless for those (including adolescents) drinking it within a religious setting. Nevertheless controlled studies on the mental/ psychiatric status of ritual hallucinogenic ayahuasca concoction consumers are still lacking. In this study, 40 adolescents from a Brazilian ayahuasca sect were compared with 40 controls matched on sex, age, and educational background for...
Journal of Psychoactive Drugs
June 1, 2005
Evelyn Doering-Silveira, Enrique Lopez, Charles S. Grob et al.
70 citations
The purpose of the study was to evaluate neuropsychologically adolescents who use ayahuasca in a religious context. A battery of neuropsychological tests was administered to adolescents who use ayahuasca. These subjects were compared to a matched control group of adolescents who did not use ayahuasca. The controls were matched with regards to sex, age, and education. The neuropsychological...
The Journal of Nervous and Mental Disease
February 1, 1996
Charles S. Grob, Dennis J. Mckenna, James C. Callaway et al.
333 citations
A multinational, collaborative, biomedical investigation of the effects of hoasca (ayahuasca), a potent concoction of plant hallucinogens, was conducted in the Brazilian Amazon during the summer of 1993. This report describes the psychological assessment of 15 long-term members of a syncretic church that utilizes hoasca as a legal, psychoactive sacrament as well as 15 matched controls with no...