Researchers at the University of California San Diego report that a weeklong program combining meditation and other mind-body techniques can quickly produce measurable changes in both brain activity and blood biology. The study found that these practices activated natural pathways involved in brain flexibility, metabolism, immune function, and pain relief. Published in Communications Biology, the findings offer new evidence that mental practices can influence physical health in significant ways.
Meditation and similar approaches have been used for thousands of years to support well-being, but scientists have struggled to explain exactly how they affect the body. This new research, part of a large initiative funded by the InnerScience Research Fund, is the first to systematically measure the combined biological effects of multiple mind-body techniques delivered over a short time.
“We’ve known for years that practices like meditation can influence health, but what’s striking is that combining multiple mind-body practices into a single retreat produced changes across so many biological systems that we could measure directly in the brain and blood,” said senior study author Hemal H. Patel, Ph.D., professor of anesthesiology at UC San Diego School of Medicine and research career scientist at the Veterans Affairs San Diego Healthcare System. “This isn’t about just stress relief or relaxation; this is about fundamentally changing how the brain engages with reality and quantifying these changes biologically.”
Inside the 7-Day Meditation Program
The study followed 20 healthy adults who took part in a 7-day residential retreat led by neuroscience educator and author Joe Dispenza, D.C. Participants attended lectures and completed about 33 hours of guided meditation along with group-based healing activities.
These sessions used an “open-label placebo” approach, meaning participants were aware that some practices were presented as placebos. Even so, such interventions can still produce real effects through expectation, shared experience, and social connection.
Before and after the retreat, researchers used functional magnetic resonance imaging (fMRI) to monitor brain activity. Blood samples were also analyzed to track changes in metabolism, immune function, and other biological markers.
Brain, Immune, and Metabolic Changes Observed
After the retreat, several notable changes were detected:
- Brain network changes: Activity decreased in regions linked to internal mental chatter, suggesting more efficient brain function.
- Enhanced neuroplasticity: Blood plasma collected after the retreat encouraged lab-grown neurons to extend and form new connections.
- Metabolic shifts: Cells exposed to post-retreat plasma showed increased glycolytic (sugar-burning) metabolism, indicating improved metabolic flexibility.
- Natural pain relief: Levels of endogenous opioids, the body’s natural painkillers, rose following the retreat.
- Immune activation: Both inflammatory and anti-inflammatory signals increased, pointing to a balanced and adaptive immune response.
- Gene and molecular signaling changes: Small RNA and gene activity shifted in ways linked to brain-related biological pathways.
Mystical Experiences Linked to Brain Connectivity
Participants also completed the Mystical Experience Questionnaire (MEQ-30), which measures feelings such as unity, transcendence, and altered awareness during meditation. Scores increased from an average of 2.37 before the retreat to 3.02 afterward.
Those who reported stronger mystical experiences also showed more pronounced biological changes, including greater coordination between different brain regions. This suggests that deeper subjective experiences may be tied to measurable changes in brain function.
Meditation and Psychedelic-Like Brain States
The researchers found that the brain activity patterns observed after the retreat closely resembled those previously linked to psychedelic substances.
“We’re seeing the same mystical experiences and neural connectivity patterns that typically require psilocybin, now achieved through meditation practice alone,” added Patel. “Seeing both central nervous system changes in brain scans and systemic changes in blood chemistry underscores that these mind-body practices are acting on a whole-body scale.”
The findings help explain how non-drug approaches like meditation may support overall health. By boosting neuroplasticity and influencing immune activity, these practices could improve emotional regulation, stress resilience, and mental well-being. The increase in natural pain-relief chemicals also points to potential applications for managing chronic pain.
What Comes Next for Mind-Body Research
Although the study focused on healthy individuals, the researchers note that more work is needed to determine how these effects translate to clinical populations. Future studies will explore whether similar programs could help people with chronic pain, mood disorders, or immune-related conditions.
The team also plans to examine how different elements of the retreat, including meditation, reconceptualization, and open-label placebo healing, contribute individually and together. Another key question is how long these biological changes last and whether repeated practice can strengthen or maintain them.
“This study shows that our minds and bodies are deeply interconnected — what we believe, how we focus our attention, and the practices we participate in can leave measurable fingerprints on our biology,” said first author Alex Jinich-Diamant, a doctoral student in the Departments of Cognitive Science and Anesthesiology at UC San Diego. “It’s an exciting step toward understanding how conscious experience and physical health are intertwined, and how we might harness that connection to promote well-being in new ways.”
Additional coauthors of the study include Sierra Simpson, Juan P. Zuniga-Hertz, Ramamurthy Chitteti, Jan M. Schilling, Jacqueline A. Bonds, Laura Case, Andrei V. Chernov, Natalia Esther Amkie Stahl, Michael Licamele, Narin Fazlalipour and, Swetha Devulapalli, at UC San Diego; Joe Dispenza and Michelle A. Poirier at Metamorphosis LLC; Jacqueline Maree and Tobias Moeller-Bertram at VitaMed Research; and Leonardo Christov-Moore and Nicco Reggente at the Institute for Advanced Consciousness Studies.
This work was supported by the InnerScience Research Fund and a Veterans Administration Research Career Scientist Award (BX005229).
Disclosure: One co-author (Joe Dispenza) is employed by Encephalon, Inc., the company offering the retreat; all other authors declare no competing interests.
