medRxivAugust 27, 2026Krista Whitley, Kai Davide Castellarin, Kumar Dave et al.
preprint
Abstract Ayahuasca use has expanded beyond its traditional Amazonian contexts, yet prospective longitudinal data examining depressive symptoms following naturalistic use in the United States remain limited. We conducted an interim analysis of an ongoing prospective observational cohort of adults participating in naturalistic ayahuasca use in Las Vegas, Nevada. Depressive symptoms were assessed...
Abstract Purpose of Review This review integrates evidence from the literature with network pharmacology tools to explore the decoction’s multitarget potential and provide multilevel insights into its therapeutic role in neuropsychiatric disorders. Recent Findings Neuropsychiatric disorders remain a significant health burden, underscoring the limitations of single-target pharmacotherapies and...
This research addresses visionary practices in contemporary Ecuadorian art, focusing on their relationship with the ritual ingestion of San Pedro (Echinopsis pachanoi) and Ayahuasca (Banisteriopsis caapi). From a perspective grounded in animist ontologies, which understand nature as a vast web of interconnected beings with interiority, the study analyzes how these master plants function as...
Ayahuasca is traditionally prepared by aqueous extraction and concentration of Banisteriopsis caapi and Psychotria viridis. The resulting beverage contains N,N-dimethyltryptamine (DMT), harmine, harmaline, tetrahydroharmine (THH), additional alkaloids, polyphenolic constituents, carbohydrates, organic acids, suspended solids, and numerous other plant-derived compounds. The source plants are...
Background: Despite the rapid growth of psychedelic research, limited attention has been given to how psychedelics are used, experienced and integrated within highly conservative religious communities, and in Jewish contexts more broadly. This study addresses this gap by examining ayahuasca use among the ultra-Orthodox (Haredi) community, a highly religious, conservative, and collectivist...
Alternative healthcare practices using psychedelic “plant medicines,” such as ayahuasca, challenge current prohibition and mainstream healthcare frameworks. Despite the criminalization of ayahuasca's active component, N,N-dimethyltryptamine (DMT), Australian ayahuasca dietero networks have developed sophisticated healthcare systems with systematic assessment processes, safety mechanisms, and...
The aim of the present work is to explore possible similarities between the subjective experience of “being dead” described by some individuals following ayahuasca use and the conviction of being dead that may occur in certain cases of Cotard syndrome. Interest in this question arises from a recurring observation, both in testimonies collected directly and in accounts publicly available on the...
Few topics in contemporary psychiatry generate as much fascination, hope, and discomfort as the therapeutic use of psychedelics.For some, they represent a long-awaited disruption in the treatment of depression, a field in which many patients still experience partial response, relapse, or treatment resistance despite decades of
The Psilocybe cubensis mushroom is recognized as the primary source of psilocybin in the Americas, occurring naturally across various regions. This fungus has a long history of use in Mesoamerican rituals due to its capacity to induce altered states of consciousness. The defining characteristic of Psilocybe mushrooms is their psilocybin content. Following ingestion, psilocybin is metabolized...
ABSTRACT Posttraumatic stress disorder (PTSD) is a mental health condition that can develop following exposure to a traumatic event, often with persistent anxiety and depressive symptoms. Recent research suggests the microbiome-gut-brain axis may play an important role in the etiology and pathophysiology of PTSD. At the same time, retreats incorporating psychedelic-assisted therapies have...
Interest in ayahuasca and its main component, N,N-Dimethyltryptamine (DMT), has currently moved from historical and experimental use into modern clinical development. Yet, current evidence is fragmented, and systematic mapping of trial methods and design choices remains limited. We therefore systematically examined registered interventional trials of DMT, ayahuasca, and DMT combined with...
BackgroundAlcohol use disorder (AUD) remains difficult to treat with lasting success, leading to growing interest in alternative therapeutic approaches. Psychedelic compounds such as Ayahuasca, a traditional brew used in Indigenous Amazonian ceremonies containing N,N-dimethyltryptamine (DMT) along with monoamine oxidase-inhibiting β-carbolines, have shown promise in reducing addictive...
NeuropsychiatrieJune 30, 2026Cielo A Estela-Fernandez, Reem Mohamed Yousif Elsheikh, Dal Bianco Beatrice et al.
Major depressive disorder (MDD) is a heterogeneous, debilitating disorder. A distinct subgroup within the MDD spectrum is identified to have treatment-resistant depression (TRD). There is an impetus to find alternative treatments for TRD to reduce disease burden and improve quality of life. Psychedelics have been used in the treatment of various psychiatric disorders since the 1950s, with...
Este artigo reflete sobre a expansão global da Ayahuasca e suas implicações para a redução de danos em saúde mental e para as transformações na psique individual e coletiva. Tem como objetivo analisar os potenciais psicoterapêuticos e os desafios psicossociais do uso da Ayahuasca por pessoas não indígenas formadas sob pilares antropocêntricos. Para isso, realizou-se uma revisão bibliográfica a...
“One of the world’s largest pharmacies is being destroyed,” says Benki Piyãko, a leader of the Ashaninka Indigenous people in the Brazilian state of Acre. The warning points to multiple threats advancing on the Amazon but also to growing debate surrounding one of the so-called forest medicines: ayahuasca. This Indigenous beverage with psychedelic properties is […]
Background: Despite the rapid growth of psychedelic research, limited attention has been given to how psychedelics are used, experienced and integrated within highly conservative religious communities, and in Jewish contexts more broadly. This study addresses this gap by examining ayahuasca use among the ultra-Orthodox (Haredi) community, a highly religious, conservative, and collectivist...
Sorcery, black magic, and supernatural harm are central to many Amazonian shamanic traditions, yet their role in contemporary Western psychedelic culture has received little systematic empirical attention. Ethnographic work suggests that Western participants in ayahuasca tourism often downplay indigenous sorcery frameworks in favour of psychological or therapeutic interpretations of difficult...
Ayahuasca is a psychoactive brew containing N,N-dimethyltryptamine (DMT) and β-carboline alkaloids that induces marked alterations in perception, emotion and self-referential processing. However, the multiscale biological organization linking peripheral metabolism, brain network dynamics, neurochemistry, and subjective experience in humans remains poorly understood. Here, we applied an...
Psychedelic states offer a useful setting for studying changes in large-scale brain organization. Here, we applied Topological Data Analysis (TDA) to resting-state fMRI functional connectivity from nine participants scanned before and after Ayahuasca ingestion. Vietoris–Rips filtrations were constructed from correlation-derived dissimilarity matrices, and persistent entropy was used to quantify...
Addiction remains a major neuropsychiatric challenge, with dopaminergic, serotonergic, and GABAergic dysregulation underlying maladaptive behaviors. Traditional Brazilian medicinal plants offer a rich source of neuroactive compounds, yet their multi-target mechanisms remain underexplored. This study aimed to evaluate the neuropharmacological potential of harmine, caffeine, and damianin through...