In 1979, a molecular biologist and long-time Zen and vipassana practitioner named Jon Kabat-Zinn started a programme in the basement of the University of Massachusetts Medical Center for patients whose chronic pain had not responded to treatment. He called it Stress Reduction and Relaxation, later Mindfulness-Based Stress Reduction.

Forty-odd years later, mindfulness-based interventions are recommended in national clinical guidelines, taught in schools and prisons, offered by employers, and delivered by apps to tens of millions of people. It is the largest and strangest thing that has happened to Buddhist practice in the modern period.

MBSR #

Mindfulness-Based Stress Reduction is an eight-week structured programme: weekly group sessions of two to two and a half hours, a full-day silent retreat around week six, and daily home practice of about 45 minutes.

Its components are recognisably Buddhist, with the framework removed:

  • The body scan — systematic attention through the body, derived from the Burmese vipassana body-sweeping methods.
  • Sitting meditation — mindfulness of breathing, extended to sounds, sensations, thoughts, and open awareness.
  • Mindful movement — gentle hatha yoga.
  • Walking meditation.
  • Informal practice — attention to routine activities.

Kabat-Zinn’s definition of mindfulness — “paying attention in a particular way: on purpose, in the present moment, and non-judgmentally” — became the standard one in the clinical literature.

The original target was chronic pain, and the core insight was Buddhist: the relationship to sensation is modifiable even when the sensation is not. The Sallatha Sutta’s two arrows is the doctrinal statement of the same point.

MBCT #

Mindfulness-Based Cognitive Therapy was developed in the 1990s by Zindel Segal, Mark Williams, and John Teasdale for a specific problem: relapse in recurrent depression.

Their reasoning was precise. Cognitive therapy works, but the mechanism appeared not to be changing the content of depressive thoughts so much as changing the relationship to them — what they called decentring. Relapse, they proposed, was driven by ruminative processing: a low mood reactivates habitual patterns of thinking about the low mood, which deepens it.

Mindfulness offered a way to interrupt this that did not require engaging with the content at all. MBCT combines the MBSR structure with cognitive-therapy elements, including a specific emphasis on recognising early warning signs.

MBCT is the mindfulness intervention with the strongest evidence base, and it is recommended by the UK’s National Institute for Health and Care Excellence for people with three or more previous episodes of depression.

What the evidence shows #

This is worth stating carefully, because claims in both directions are overstated.

Reasonably well supported:

  • Relapse prevention in recurrent depression. Meta-analyses, including Kuyken and colleagues’ 2016 individual-patient-data analysis in JAMA Psychiatry, find MBCT reduces relapse risk comparably to maintenance antidepressants, with larger effects in those with more severe histories.
  • Modest improvements in anxiety, depression, and stress across a range of populations.
  • Chronic pain. Improvements in pain-related distress and function, with smaller effects on pain intensity itself.

Weaker or contested:

  • Effects on physical health outcomes such as immune function and blood pressure.
  • Workplace and school programmes, where effects are generally small and trial quality is variable. The MYRIAD trial, a large UK schools study published in 2022, found no benefit for a universal school mindfulness curriculum on adolescent mental health.
  • App-based delivery, which has far less evidence than the taught eight-week format.

The methodological problems are real and widely acknowledged. Many early trials were small, lacked active control conditions, and were conducted by researchers committed to the intervention. A prominent 2018 critique in Perspectives on Psychological Science by Nicholas Van Dam and fifteen co-authors documented inconsistent definitions, weak measurement, and systematic overstatement in both the literature and the media coverage of it.

Adverse effects were largely ignored for decades and are now being studied. Willoughby Britton’s work at Brown has documented a meaningful rate of difficult experiences — anxiety, dissociation, depersonalisation, and re-emergent trauma — particularly in intensive practice. The traditions have their own literature on this; see When Meditation Is Difficult.

What was removed #

The clinical programmes deliberately stripped the Buddhist framework, and it is worth being clear about what that means.

Removed: the Four Noble Truths; karma and rebirth; the ethical precepts; the goal of liberation; refuge, teacher, and community; and the doctrine of non-self.

Retained: attentional technique, the present-moment emphasis, the non-reactive stance, and the body scan.

Kabat-Zinn has been explicit that the removal was strategic — that the practices would not have reached hospital patients or insurers in religious packaging — and that he regarded the essentials as transmissible without the doctrinal apparatus.

Whether that is true is the substantive question.

The critique #

The strongest version is Ron Purser’s McMindfulness (2019), and it has several parts.

The ethical excision is not neutral. Buddhist sati is, in the Abhidhamma, a wholesome mental factor that cannot co-arise with greed or hatred. Bare attention that can accompany any state is a different thing. A sniper attends closely; on the traditional analysis he does not have sati. Removing the ethical dimension changes the category, not merely the packaging.

It individualises structural problems. If workers are stressed by overwork, insecurity, and lack of control, teaching them to relate to the stress differently addresses the symptom while leaving the cause — and does so at the employer’s expense and in the employer’s interest. Purser’s charge is that mindfulness has become “a tool of self-discipline disguised as self-help.”

It changes the goal. Buddhist practice aims at the end of craving. Clinical mindfulness aims at reduced symptoms and better functioning — that is, at more comfortable participation in the conditions the tradition regards as the problem.

It misrepresents its lineage. The “2,500 years of tradition” framing is common in mindfulness marketing and is inaccurate. Mass lay vipassana is roughly 150 years old, and the practices MBSR draws on come through a specific and recent Burmese reform lineage.

The defence #

Also substantial.

The interventions help people, including people who would never have approached a Buddhist centre, and the relapse-prevention evidence in particular is about a serious illness.

Adaptation is what Buddhism has always done. Chan is not Indian Buddhism, and nobody now argues it is inauthentic. The Chinese reception changed the tradition more than MBSR has.

Many practitioners go further. A significant number encounter the Dharma through MBSR and end up in Buddhist practice, which several teachers describe as the programme’s unofficial function.

The alternative was not traditional Buddhism. It was no practice at all, for the overwhelming majority of people the programmes reach.

For Buddhist practitioners #

Two practical observations.

If you have come to Buddhism through mindfulness, there is a great deal you have not met: the ethical framework, the analysis of the person, the cosmology, the community, and the actual goal. None of it is optional in the tradition’s own account.

If you already practise, the clinical literature is genuinely useful for one thing: it documents adverse effects that traditional communities have historically handled informally or not at all, and it takes seriously the question of who should not be doing intensive practice unsupervised.

Common questions #

Is MBSR Buddhist? Its techniques derive from Buddhist practice; its framing, goals, and institutional setting are not Buddhist. Kabat-Zinn describes it as Dharma in a secular form; critics describe it as a technique extracted from its context. Both descriptions are defensible.

Does mindfulness work? For relapse prevention in recurrent depression, the evidence is good. For general stress reduction, modest. For workplace and universal school programmes, weak. The honest summary is that it does something real and smaller than the publicity suggests.

Can it be harmful? Yes, in a minority of cases, and more often in intensive retreat conditions than in eight-week courses. People with trauma histories, psychosis, or dissociative conditions should approach intensive practice with clinical advice.

Should I do MBSR or learn from a Buddhist teacher? They answer different questions. MBSR is a structured, time-limited, evidence-based programme for reducing distress. A Buddhist teacher offers a path with a different destination. Many people do both, in that order.

Sources & further reading #

Jon Kabat-Zinn, Full Catastrophe Living (Bantam, rev. ed. 2013) — the MBSR programme by its founder. Zindel Segal, Mark Williams & John Teasdale, Mindfulness-Based Cognitive Therapy for Depression (Guilford, 2nd ed. 2013) — the clinical manual, with the rationale. Ron Purser, McMindfulness (Repeater, 2019) — the political critique. Nicholas Van Dam et al., “Mind the Hype,” Perspectives on Psychological Science 13 (2018) — the methodological critique from within the field. Willoughby Britton et al., on meditation-related adverse effects — see the Varieties of Contemplative Experience study (PLOS ONE, 2017).