What research says about Vipassana, and what it doesn't

Vipassana has been studied far less than secular mindfulness programmes. A systematic review in 2010 found seven relevant studies, most of them of poor quality. A second review, published in 2025, included eleven studies from 2010 onwards, and only three of them were randomised trials. This article explains what kinds of studies exist, what the main ones found and how much weight they can carry. It describes research; it is not medical advice.

Three kinds of study

Before and after a course

The most common design asks people to fill in questionnaires before a residential course, straight after it and sometimes months later. The course studied is usually the 10-day course taught in S. N. Goenka's tradition. Every such course follows the same timetable and recorded instructions (see the 10-day course, day by day), so results from different centres are easier to compare. Some studies compare participants with people who have not yet taken a course; many have no comparison group at all.

Courses in prisons and jails

Since the first course in an Indian jail in 1975, 10-day courses have been held in prisons in several countries. Researchers in Seattle and in a maximum-security prison in the southern United States compared inmates who chose to take a course with inmates who received the prison's usual programmes. Vipassana in prisons tells that history.

Long-term meditators and reviews

A third group of studies looks at people who have meditated for years, comparing their brain scans, EEG recordings or questionnaire scores with those of non-meditators. Reviews and meta-analyses then pool the results of many studies.

The main studies at a glance

The table lists studies of Vipassana specifically, plus one meta-analysis of retreats in all traditions. Each link goes to the study's record on PubMed or, for the prison study, ERIC.

Study	Who was studied	What it found
Szekeres and Wertheim, 2015	122 adults from the community on a standard 10-day course, compared with 50 people waiting to start one; 90 followed up at six months	Less stress and more well-being, self-kindness and mindfulness. Some gains faded by six months but stayed above the starting point.
Krygier et al., 2013	36 people before and after a 10-day retreat; no comparison group	Well-being rose and ill-being fell. Heart-rate measures changed in mixed ways.
Goyal et al., 2023	58 people with migraine enrolled for a 10-day retreat, 45 completed it; no comparison group; followed for a year	At 12 months, 2.7 fewer migraine days per 28 days (from 16.6). 29% had at least halved their migraine days.
Bowen et al., 2006	Jail inmates who took a course, compared with inmates on the usual programmes (not randomised)	After release, significantly less alcohol, marijuana and crack cocaine use, and fewer alcohol-related problems and psychiatric symptoms.
Perelman et al., 2012	60 long-term prisoners in a maximum-security prison who took courses, compared with 67 in another programme; followed for a year	More mindfulness and emotional intelligence, less mood disturbance. Rule infractions fell in both groups.
Hölzel et al., 2008	20 Vipassana meditators (8.6 years of practice on average, 2 hours a day) and matched non-meditators; one brain scan each	Greater grey-matter concentration in three regions, including the right anterior insula, which is involved in body awareness.
Bowles et al., 2022	Online survey of 1,668 meditators from many traditions	More lifetime practice went with better well-being, levelling off after about 500 hours. Vipassana as taught by S. N. Goenka was among the practices most strongly linked to good outcomes.
Chiesa, 2010	Review of 7 controlled or cross-sectional studies up to 2009	Preliminary brain and clinical findings, from data the author calls "few and mainly low-quality".
Khoury et al., 2017	Meta-analysis of 21 studies of retreats in many traditions, 2,912 people	Moderate improvements, with no difference between meditation styles. Large differences between studies limit the conclusions.
Giridharan et al., 2025	Review of 11 Vipassana studies from 2010 to 2025, 3 of them randomised	"Moderate evidence" of benefit for stress, anxiety, mindfulness and migraine, limited by small samples, risk of bias and no blinding.

What the studies can and cannot show

Small samples

Most studies have a few dozen participants. The migraine trial enrolled 58 people, the heart-rate study 36, and the brain-scan study 20 meditators. Small studies can miss real effects, and they can also produce chance findings that later studies do not repeat.

People choose to take part

Nobody is sent to a 10-day course at random. People who apply, are accepted and stay for all ten days may already differ from others in motivation, health or expectations. The 2010 review named self-selection and placebo among the questions still to be answered. In the migraine trial, 300 people were screened and 19% enrolled. The Seattle study compared inmates who chose to take the course with inmates who did not.

Few comparison groups, fewer randomised trials

A randomised controlled trial, in which chance decides who takes the course, is the usual way to rule out those differences. The 2025 review found three among eleven studies. The Seattle researchers wrote that a randomised trial was not possible in their jail, for design and ethical reasons. The 2015 community study used people waiting for a later course as its comparison group, which helps but is not random.

Self-report and no blinding

Most outcomes are questionnaires, filled in by people who know they have just meditated and often hope it helped. Blinding, where participants and assessors do not know who received what, is almost impossible with meditation, and the 2025 review lists its absence as a limitation.

A snapshot cannot show cause

Brain and EEG studies of long-term meditators mostly measure each person once. They show that experienced meditators differ from non-meditators, not that meditation caused the difference, because people who keep meditating for years may have differed from the start. The 2022 survey of 1,668 meditators has the same limit.

Harms are rarely measured

A 2017 study by Lindahl and colleagues notes that more than 75% of meditation studies do not actively ask about adverse effects. A study that measures only stress and well-being cannot tell you how often a course goes badly for someone. Difficult experiences on meditation retreats covers the research on that question.

What can reasonably be concluded

Reasonably supported:

• People who complete a 10-day Vipassana course usually report less stress and more well-being and mindfulness afterwards, and some of the change lasts at least six to twelve months.
• Pooled across traditions, meditation retreats show moderate improvements, although results vary widely between studies.
• In one jail programme, course participants used less alcohol and fewer drugs after release than inmates on the usual programmes.

Suggestive only:

• Brain differences in long-term meditators, fewer migraine days, and lower reoffending in an in-house review at the Seattle jail. These come from cross-sectional, single-group or non-randomised designs.

Not shown:

• That Vipassana treats or cures any illness. The Code of Discipline on dhamma.org says the purpose of Vipassana "is not to cure disease" and that it is not a substitute for medical or psychiatric treatment.
• How a course compares with other active treatments, or what happens after more than about a year.

Vipassana courses are not MBSR or MBCT

Much of what is reported as "mindfulness research" is about secular group programmes, not Buddhist retreats. Mindfulness-Based Stress Reduction (MBSR) was developed by Jon Kabat-Zinn at UMass Memorial Medical Center in Massachusetts in 1979 and runs over eight weeks, according to UMass Memorial Health. The Insight Meditation Society's history page quotes Kabat-Zinn saying the vision for MBSR arose while he was at IMS, an insight meditation centre in Massachusetts. Mindfulness-Based Cognitive Therapy (MBCT), also an eight-week programme, has been tested in randomised trials for preventing relapse in recurrent depression.

These programmes have far more randomised trials behind them. A 2014 review in JAMA Internal Medicine included 47 trials with 3,515 participants. It found moderate evidence that mindfulness programmes improved anxiety, depression and pain, and no evidence that meditation programmes were better than other active treatments. A 2016 analysis of patient data from nine MBCT trials (1,258 people) found a lower risk of depressive relapse over 60 weeks than in people who did not receive MBCT.

The formats are very different. An eight-week programme means weekly classes and short daily practice while living an ordinary life. A 10-day course means living at a centre in Noble Silence, keeping precepts and meditating for about ten hours a day. Findings from one format cannot simply be carried over to the other, in either direction.

The health questions on a Vipassana application, and why organisers ask them, are explained in before your first course.