People who have a history of severe early childhood trauma may experience marked improvements in their mental health following the use of psychedelic drugs in a ceremonial setting. A new observational study published in Psychedelic Medicine found that individuals who reported more adverse events during their early years showed greater reductions in anxiety and larger boosts in overall well-being after attending psychedelic retreats compared to those with fewer childhood traumas. These results suggest that guided psychedelic experiences could provide a novel approach for helping individuals with deep psychological wounds.
Adverse childhood experiences encompass a wide range of stressful early life events that happen before a person turns eighteen. These events are generally divided into two broad categories. The first includes direct childhood maltreatment, such as physical abuse, emotional abuse, and extreme neglect. The second category involves household dysfunction, which can include growing up with family members who struggle with severe mental illness, substance abuse, domestic violence, or criminal behavior.
The impact of these early adverse experiences often persists long into adulthood, leading to poor physical and mental health. Individuals with a heavy burden of childhood trauma frequently show elevated levels of general anxiety and lower overall mental well-being. They also tend to exhibit a psychological trait known as experiential avoidance, which is a defense mechanism where a person attempts to suppress, ignore, or escape from difficult thoughts, painful memories, and uncomfortable physical sensations.
Treating the psychological fallout of early life trauma is notoriously difficult. Standard interventions like traditional talk therapy and common psychiatric medications are often less effective for individuals with a history of childhood maltreatment. People who experienced high levels of early life trauma are frequently less likely to engage deeply in therapy or find the provided interventions helpful. Because of these challenges, mental health professionals are actively searching for alternative interventions to help this specific population.
Psychoactive substances have recently gained global attention for their potential to alleviate stubborn mental health conditions. Classic psychedelics, such as the chemical psilocybin found in magic mushrooms, interact with specific serotonin receptors in the human brain. At higher doses, these substances reliably alter a person’s mood, thoughts, and perception of reality. Recent clinical research indicates that these drugs might relieve symptoms of depression, anxiety, and eating disorders.
Beyond formal medical clinics, psychedelic use is becoming increasingly popular in naturalistic and ceremonial settings. Retreats often span several days and consist of guided group sessions overseen by a facilitator who provides ongoing emotional support. Taking psychedelics in a supportive, communal environment has been linked to positive mental health outcomes, but the specific benefits and risks for people with severe trauma histories remains poorly understood.
Maryam K. Mehmood, a researcher at Imperial College London, led an investigation to examine the mental health outcomes of ceremonial psychedelic use across the spectrum of childhood trauma severity. The research team utilized data from a large-scale online survey conducted between 2018 and 2019. The project recruited individuals who were already planning to take a psychedelic drug at an established retreat center.
The final analysis included 570 participants who attended varied retreats located largely in the Netherlands and the Caribbean regions. Most of the participants took psilocybin, while a smaller portion consumed ayahuasca, a traditional South American psychoactive brew. The group tended to be highly educated, predominantly white, and originated mostly from the United States and the United Kingdom.
To track changes over time, the researchers gathered data at four distinct points. Two weeks before the psychedelic ceremony, participants completed questionnaires measuring their history of adverse childhood experiences. During this baseline assessment, they also answered questions designed to evaluate their current levels of generalized anxiety, experiential avoidance, and overall mental well-being.
One day after the psychedelic ceremony concluded, the participants were surveyed again to gauge the acute subjective intensity of their experience. The researchers focused on measuring three specific types of psychedelic phenomena. First, they looked at mystical experiences, which involve a deep sense of spiritual unity, transcendence of time and space, and a feeling of sacredness.
Second, the team evaluated emotional breakthrough experiences. This refers to the process of facing painful emotions that a person usually pushes aside, ultimately leading to a sense of emotional release or catharsis. Finally, the researchers measured challenging experiences, which encompass symptoms of acute distress such as fear, paranoia, feelings of isolation, and grief during the drug’s active influence.
Following the retreat, the research team checked in with the participants to measure longer lasting psychological changes. The participants completed follow-up surveys at two weeks and four weeks after the psychedelic experience. These surveys reassessed their levels of anxiety, avoidance behaviors, and general psychological well-being.
The researchers found that participants across all groups tended to report improvements in their mental health following the retreats. When accounting for how the individuals felt before the ceremony, the data showed that people with a greater number of adverse childhood experiences reported larger psychological benefits compared to those who had fewer traumatic childhood events. Following the retreat, higher levels of childhood trauma were associated with higher subsequent well-being.
Participants with a heavier burden of severe childhood events also reported lower general anxiety in the weeks following their trip. The surveys showed an association between extensive early life trauma and a reduction in experiential avoidance four weeks after the ceremony. This suggests that the participants became more willing to sit with uncomfortable emotions rather than actively suppressing them.
The study also revealed an association between childhood trauma and the specific nature of the drug induced experience. The researchers found a positive correlation between adverse childhood experiences and both mystical and emotional breakthrough experiences. Participants with more traumatic backgrounds were generally more likely to have a strong sense of spiritual unity and a deep emotional release during their psychedelic session.
The researchers did not find a correlation between early life trauma and challenging experiences. People with traumatic histories did not report facing more paranoia, fear, or profound psychological distress during their psychedelic sessions than the other participants. The acute experiences of the trip did not alter the general relationship between childhood trauma and the observed mental health improvements.
The team conducted an additional analysis focusing entirely on a subgroup of participants who reported four or more distinct types of adverse childhood events. This threshold of trauma is known to be strongly associated with particularly poor outcomes in both mental and physical health. For this severely traumatized group, the researchers wanted to see if the subjective qualities of the psychedelic trip predicted specific psychological benefits.
For those with high levels of childhood trauma, having an emotional breakthrough during the ceremony predicted greater feelings of well-being at both two weeks and four weeks after the event. Emotional breakthroughs in this group were also negatively associated with anxiety at the four-week mark, meaning a stronger emotional release was linked to lower anxiety levels later on. This delayed reduction in anxiety might suggest that these participants needed time to process repressed memories confronted during the ceremony.
Similarly, for the highly traumatized subgroup, experiencing a strong mystical state was associated with improved well-being in the weeks after the ceremony. Deep mystical experiences also predicted a drop in experiential avoidance one month later. In contrast, having a highly challenging or frightening psychedelic experience was not associated with changes in mental health outcomes either positively or negatively.
The authors noted several limitations to their study. Because the research utilized a prospective observational design, it cannot prove that the psychedelic substances directly caused the improvements in mental health. Participants actively sought out and paid for these retreats, which introduces a high likelihood that their personal expectations influenced their psychological outcomes.
The convenience sample used in the study also limits how broadly the findings can be applied. The participants were predominantly white people from higher socioeconomic backgrounds, which does not reflect the broader population most burdened by severe childhood trauma. A large number of the individuals who completed the initial surveys also failed to complete the final follow-up questionnaires, which can skew the findings if those who dropped out had worse outcomes.
The findings offer tentative guidance for developing structured psychedelic therapies for people deeply affected by early life adversity. The authors suggest that future research should involve clinical trials that specifically recruit individuals with mental health disorders and a verified history of childhood trauma. Conducting controlled longitudinal studies will clarify the safety, efficacy, and proper administration of psychedelics for this vulnerable population.
The study, “Ceremonial Psychedelic Experiences and Changes in Mental Health Outcomes in Those with Adverse Childhood Experiences,” was authored by Maryam K. Mehmood, Rebecka Bremler, Meg J. Spriggs, Hannes Kettner, Leor Roseman, Lasse Damgaard, Robin Carhart-Harris, David Erritzoe, and Richard J. Zeifman.