Scientific Research on Our Retreats
Join Our Research-Backed Psilocybin Retreat Studies
We contribute to scientific research at:
Bridging Science and Ceremony
Psychedelic science is evolving rapidly, but studying these experiences in a laboratory has limits. Ceremonial retreats offer researchers something distinct: the chance to study these experiences in the setting where they naturally occur, held in community, guided with care, and supported by preparation and integration.
That is why our retreats have served as a study site for university research. We have worked with university researchers for years; the three studies below are examples. Participants at Acsauhaya could voluntarily take part, contributing real- world data to the academic understanding of psychedelic experiences in legal retreat settings.
Three Studies Our Participants Contributed To
Data collection for these studies has been completed. We remain in close contact with the research teams, and our retreats are available for future study phases.
Live tracking of psychological changes
Live tracking of psychological changes
About This Study
* Data collection completed
This observational study explored how psilocybin truffles, experienced in a legal retreat setting, influence wellbeing, mindfulness, and meaning in life. Participants answered brief daily check-ins on their phone before, during, and after their retreat.
Contact Information
Lead researcher: Huseyin Beykoylu, PhD candidate, Leiden University.
Principal Investigator: Prof. Michiel van Elk.
Contact: retreatESM.study@fsw.leidenuniv.nl
Brain Connectivity and Psychedelic Experience
Brain Connectivity and Psychedelic Experience
About This Study
* Data collection completed
This study examined how taking part in a legal psychedelic retreat may alter brain connectivity, and how those changes relate to shifts in personality, wellbeing, and emotional processing. Participants received fMRI brain scans at Leiden University before and after their retreat, followed by three online surveys.
Contact Information
Lead researcher: Xaver Funk, PhD candidate, Leiden University.
Contact: retreat.study@fsw.leidenuniv.nl
The Psychedelic Ceremony Survey
The Psychedelic Ceremony Survey
About This Study
* Data collection completed
This survey study explored how guided psychedelic experiences in retreat settings influence emotional wellbeing, mindset, and personal growth. Participants completed three online surveys: before their retreat, one day after, and four weeks after.
Contact Information
Lead researcher: Sian Lavis, PhD candidate, University of Exeter.
Senior researcher: Dr Leor Roseman, University of Exeter, within a research collaboration with the Centre for Psychedelic Research at Imperial College London.
Contact: integration.study@exeter.ac.uk
Mind-Body Wellness Study
The Psychedelic Ceremony Survey
About This Study
* Psychedelic Research
Curious what your journey might reveal, and how you change in the weeks after your psilocybin sessions? Rejuvyn is partnering with an independent doctoral study at the California Institute for Human Science exploring how psilocybin experiences relate to body awareness, mood, and anxiety.
Body awareness, or interoception, is your ability to notice and make sense of the signals coming from inside your body: your breath, your heartbeat, muscular tension, gut feelings. It is closely tied to emotional regulation and to how people integrate a psychedelic experience afterwards, which is why it sits at the heart of this study.
This invitation is for Rejuvyn’s own accepted retreat guests. Taking part is simple and private: about 20 minutes of online questionnaires before your retreat, a 2-minute dose form a few days after your sessions, and another 20 minutes about a month later. Nothing about your retreat changes. As a thank-you, you can request a personal summary of your own before-and-after results to support your integration.
Interested? Visit Mind-Body Wellness Study — Eligibility Check to answer 5 quick eligibility questions. If you qualify, you will go straight to the consent form and be enrolled. You can also reach the researcher, Reza Mohammed, directly at rmohammed@cihs.edu.
Three Studies Our Participants Contributed To
Data collection for these studies has been completed. We remain in close contact with the research teams, and our retreats are available for future study phases.
What Happens Next
Our retreats remain available as a study site for future research phases, and we welcome inquiries from academic researchers.
Ready to Begin Your Journey?
Whether you’re ready to apply or still exploring, we’re here to support your next step.