Quick Answer
One genuinely important study wrapped in a book that keeps overreaching on its behalf. Van Lommel's prospective research on cardiac arrest survivors is the best-designed work in this field and it produced findings worth taking seriously. The chapters around it, which recruit quantum non-locality to explain consciousness surviving death, are not defensible and undermine the part that is. Read the clinical material and skip the physics.
Key Takeaways
- The prospective design is the achievement. Everyone was asked, not just volunteers.
- Physiological predictors did not predict who reported an experience, which is the interesting result.
- The quantum chapters are not sound and should be treated as unsupported.
- The dentures case is an anecdote, reconstructed years later, outside the protocol.
- Timing remains unestablished, which is the objection no study in this field has solved.
🕑 14 min read
What This Book Is
Consciousness Beyond Life was published in Dutch in 2007 and in English in 2010. It has two projects and they are of very unequal quality.
The first is a presentation of van Lommel's own research: a prospective study of near-death experiences among cardiac arrest survivors, published in The Lancet in 2001, which remains the most cited paper in the field.
The second is a general argument that consciousness is not produced by the brain, supported by a survey of the wider literature and by chapters attempting to ground the position in physics.
A reader is well served by the first and badly served by the second, and the book does not separate them.
This article reviews a book and contains no medical advice. Nothing here bears on decisions about resuscitation, treatment or end-of-life care, which belong with clinicians and with the people involved. If an experience of this kind has left you or someone close to you distressed, that is common and worth raising with a doctor who will take it seriously.
Who Pim van Lommel Is
Van Lommel practised as a cardiologist in the Netherlands for more than a quarter of a century, in a hospital setting, resuscitating people.
By his own account he became interested after patients began describing experiences from periods when they had been clinically dead, and after realising that he had no idea how common this was because nobody had ever asked systematically.
He designed and ran the study, published it in a leading general medical journal, and subsequently left clinical practice to write and lecture on the subject.
The credentials matter for the same reason they matter with any clinician-researcher: he had the access, understood the physiology, and knew what the medical objections would be. They do not make his metaphysical conclusions any stronger, and the book sometimes reads as though they should.
Why the Design Mattered
This is the genuine contribution and it is worth explaining properly.
Before this study, almost all research on the subject was retrospective. Investigators advertised, or were contacted by people who had had an experience and wanted to describe it.
That design cannot answer the basic questions. It cannot tell you what proportion of people who nearly die have such an experience, because you only ever hear from those who did. It cannot compare them with anyone, because there is no comparison group. And it selects for people motivated to come forward, who are unlikely to be representative.
Van Lommel's study enrolled consecutive cardiac arrest survivors across ten Dutch hospitals: everyone who was resuscitated and lived, regardless of what they reported. Three hundred and forty-four patients.
Each was interviewed within days of the event, by trained interviewers, using a standardised instrument, and asked the same questions whether or not they had anything to report.
That gives you a denominator, a comparison group of people who went through the same medical event and reported nothing, and a record made close to the event rather than years later.
What the Study Found
The headline numbers.
Roughly eighteen per cent of survivors reported some recollection from the period of unconsciousness. A smaller proportion, around twelve per cent, reported a core experience by the study's criteria.
That is lower than the figures circulating in the popular literature, which had been inflated by the selection problem in earlier work, and van Lommel reports it plainly.
The reported content matched what the field had described: awareness of being dead, positive emotion, a sense of leaving the body, movement through a tunnel, encounter with light, observation of an unfamiliar place, meeting deceased people, a review of life, and a boundary.
The frequency of the deeper features declined steadily. Many reported peace; far fewer reported a life review.
The Result That Matters Most
The finding van Lommel builds his argument on is a negative one, and it is the study's most interesting output.
He examined whether the experience could be predicted by the medical circumstances, and found that the variables he was able to assess did not predict who would report one.
Duration of the arrest did not predict it. Whether the patient had been intubated did not. Medications administered did not. Nor did the number of previous resuscitations.
Demographic variables largely did not either, with the exception that patients under sixty were somewhat more likely to report an experience, and that those who had previously had one were more likely to report another.
His argument is that if a specific physiological cause were operating, such as oxygen deprivation, it should show up here, since every patient in the study was severely oxygen-deprived and only a minority reported anything.
That is a legitimate point and it is the strongest thing in the book. It is also weaker than he presents it: the study measured the variables available in a clinical setting, not the fine-grained cerebral physiology that a proper test would require, and absence of an association with crude proxies is not absence of a physiological explanation.
This is worth understanding as a general matter, because the same reasoning appears constantly in arguments about anomalous phenomena. Showing that a proposed cause does not correlate with an effect is genuinely informative and it is not the same as showing there is no physical cause. The space of possible physiological explanations is large, the variables recorded during an emergency resuscitation are few and crude, and a null result across four of them narrows the field considerably less than it appears to.
One methodological detail is worth pausing on because it is easy to miss and it cuts against van Lommel's own argument. The study asked patients whether they had any recollection of the period of unconsciousness. It did not, and could not, establish that a patient who reported nothing had experienced nothing.
Memory of any event requires the encoding of that event, and encoding is among the first functions to fail under severe physiological stress. A patient who had a vivid experience and did not encode it is indistinguishable, in this study design, from one who had none. So the eighteen per cent figure is a rate of recall, not a rate of occurrence, and the two could differ enormously in either direction.
This matters for the argument. Van Lommel treats the minority who report an experience as needing explanation, on the grounds that everyone was equally oxygen-deprived and only some reported anything. But if the difference between the groups is a difference in whether an experience was retained rather than whether it occurred, then the puzzle he is pointing at may be a puzzle about memory formation during resuscitation rather than about consciousness at all. He does not consider this, and it is among the more obvious alternatives available.
The Eight-Year Follow-Up
The part of the study least discussed and arguably the most solid.
Van Lommel followed a subset of patients for eight years, interviewing them at two years and again at eight, comparing those who had reported an experience with those who had not.
The differences were substantial and they persisted. Those who had reported an experience showed greater reduction in fear of death, greater increase in belief in an afterlife, more interest in meaning and in other people, less interest in money and status, and greater acceptance of others.
The comparison group is what makes this valuable. Both groups had survived cardiac arrest, which is itself a life-altering event, and the changes were larger and more durable in the group that had reported an experience.
This does not tell you what the experience was. It does establish that something happened which had lasting psychological consequences distinguishable from the effect of nearly dying, and that is a real finding.
The Dentures Case
The single most quoted item from this book, and it needs handling carefully because it is quoted as though it were part of the study.
The account: a comatose patient was brought in, a nurse removed his dentures and placed them in a crash cart drawer, and a week later the patient recognised the nurse and stated where the dentures had been put.
It is a striking story. It is also not evidence, for reasons that have nothing to do with anyone's honesty.
It was not part of the prospective protocol. It was recalled and written up years after the event. There is no contemporaneous record of what the patient said or when. The identification of the nurse and the location of the dentures were reported by the nurse himself, who had by then a story he was invested in.
Sceptical analyses have raised questions about the timeline and about how much the patient might have learned during a week in hospital.
Van Lommel includes it prominently, which is a mistake of the same kind he otherwise avoids: the whole value of his study is that it did not rely on retrospective anecdote, and here he relies on one.
The Filter Argument
His theoretical position, and it deserves fair statement because it is not absurd.
The proposal is that the brain does not produce consciousness but constrains and localises it. The standard image is a radio: damage the receiver and the reception degrades, and nobody concludes that the radio was generating the broadcast.
The idea is old, having been floated by William James and others over a century ago, and it has been revived periodically since.
Its virtue is that it accounts for the same correlations that a production model accounts for. Every observed relationship between brain state and experience is compatible with the brain being a filter rather than a source, which is precisely the point.
Its weakness is the same fact stated differently. A theory that predicts exactly the same observations as its rival is not being supported by those observations, and it requires an additional entity, consciousness existing independently, for which no separate evidence is offered.
Van Lommel treats the filter model as though the null findings in his study favour it. They are consistent with it. Consistency is not support.
The Physics Chapters
These have to be addressed directly because they occupy a substantial portion of the book and they are not defensible.
Van Lommel attempts to ground non-local consciousness in quantum mechanics, invoking entanglement, non-locality, wave function collapse, zero-point energy and the idea of consciousness as a field encoded in some non-material substrate.
The problems are basic. Quantum non-locality refers to correlations between measurement outcomes on entangled particles and does not permit information transfer; it has no application to consciousness persisting outside a brain. Entanglement is fragile and decoheres rapidly in warm wet environments. Zero-point energy is not a reservoir of anything usable. And the general move of citing unresolved questions in physics as support for an unrelated proposal is not an argument.
A cardiologist is not obliged to be a physicist. He was obliged to have this material checked by one, and it does not read as though he did.
The cost is severe. A reader who knows physics reaches these chapters, concludes the author does not know when he is out of his depth, and reasonably discounts the clinical work as well. That is unfair to the study and it is the book's own doing.
The Objection Nobody Has Answered
The deepest problem, and it applies to this study as much as to any other in the field.
There is no way to establish when the experience occurred.
Patients report afterwards. The claim is that the experience took place during the period of absent circulation, when the brain was not producing organised activity. The alternative is that it was constructed during the transition into unconsciousness, or during the return, or in the hours of confused semi-awareness afterwards, and is subsequently recalled as belonging to the gap.
Nothing in the reports distinguishes these, because the sense of when a memory belongs is itself constructed.
The way to test it would be information the patient could not have acquired otherwise, which is why studies have placed concealed visual targets in resuscitation areas. Those studies have been conducted over many years across multiple hospitals and have not produced positive results.
Van Lommel does not resolve this and cannot. He argues around it. A reader should notice each time he does.
Other Limitations
Three worth naming.
Interviews within days, not immediately. Days in a hospital, with family visiting and staff talking, is enough time for a great deal of ordinary information transfer and narrative formation.
Cultural homogeneity. A Dutch sample tells you about a Dutch population, and cross-cultural comparison is where the interpretive questions become sharpest.
Author position. Van Lommel designed the study, interpreted the results and wrote the book advocating a conclusion. That is not misconduct and it is a reason for independent replication, which has been partial.
Van Lommel and Greyson
The comparison is instructive and readers should know which they are getting.
Bruce Greyson spent a career on this and consistently declines to conclude. He states what the evidence supports, names what it does not, and leaves the metaphysical question open on almost every page.
Van Lommel produced the better single study and argues a stronger position from it than it supports.
The two together are the right way to read the field: van Lommel for the data, Greyson for the discipline about what data of that kind can establish.
What Holds Up
The study design, which set the standard and has been the model for prospective work since.
The incidence figure, which is lower than the popular literature had claimed and which he reported honestly against his own interest.
The eight-year follow-up with a comparison group, which is the most solid evidence anywhere that these experiences have durable and distinguishable psychological consequences.
And the null findings on the medical variables, which do not establish what he thinks they establish and are a genuine result that any physiological account has to accommodate.
Who Should Read It
Read the clinical chapters if you want to know what the research on near-death experiences actually consists of.
Read it if you are interested in study design, because the contrast between what a prospective study can establish and what a retrospective one cannot is unusually clear here.
Read it alongside the broader survival literature and a good sceptical account, and skip the physics.
Do not treat the dentures case as data, do not cite the quantum chapters, and do not take the book's conclusions as the study's findings. They are separable and separating them is the whole task of reading it well.
The finding worth carrying out of this book is the one that needs no metaphysics. People who reported these experiences changed, measurably, for at least eight years, in a specific direction: less interest in money and status, more interest in other people and in meaning, less fear of dying. That change was larger than in people who survived the same event without the experience. Whatever produced it, the content it delivered is not obscure and does not require nearly dying to receive. What apparently does require nearly dying is finding it credible enough to act on, which is the more interesting problem and the one nobody has solved.
A good study inside a book that keeps overreaching for it.
Affiliate disclosure: Thalira earns a small commission on purchases made through the link above, at no additional cost to you. Our assessment of which chapters are worth reading is set out above and is independent of the link.
Frequently Asked Questions
What is Consciousness Beyond Life about?
Pim van Lommel's 2007 book presenting his prospective study of near-death experiences in cardiac arrest survivors, together with his argument that consciousness is not produced by the brain but received by it.
Who is Pim van Lommel?
A Dutch cardiologist who practised for over twenty-five years and became interested in the subject after patients described experiences during resuscitation. He led the study published in The Lancet in 2001 and has written and lectured on it since.
What was the Lancet study?
A prospective study across several Dutch hospitals, following 344 consecutive cardiac arrest survivors, interviewing them within days using standardised criteria, and following a subset for eight years. It was published in 2001 and is the field's most cited paper.
Why does prospective design matter?
Because earlier work collected people who volunteered after having an experience, which cannot tell you how common such experiences are or what distinguishes those who have them. A prospective design enrolls everyone who survives and asks all of them the same questions.
What were the main findings?
That about eighteen per cent reported some recollection, that the medical variables examined did not predict who reported one, and that those who did showed larger and more durable changes in values and in fear of death at follow-up than those who did not.
What is the filter theory of consciousness?
The proposal that the brain does not generate consciousness but constrains and localises it, in the way a radio does not produce a broadcast. It is an old idea, revived here, and it is compatible with the correlations neuroscience observes.
What are the main criticisms?
That the timing of the experiences cannot be established, that the physiological data available was limited, that the quantum mechanics chapters are not defensible, and that the conclusions drawn go considerably beyond what the study itself supports.
Is the quantum material sound?
No. The chapters invoking entanglement, non-locality and zero-point fields to explain non-local consciousness are the weakest part of the book and are not supported by physics. They damage the credibility of the genuinely careful clinical work.
Does the study prove consciousness survives death?
No. It establishes an incidence rate, shows that several proposed physiological predictors did not predict who reported an experience, and documents long-term change. The inference to survival is van Lommel's interpretation rather than a finding.
What about the dentures case?
A widely cited anecdote in which a nurse reported that a comatose patient later recognised him and knew where his dentures had been placed. It was reconstructed years afterwards from memory, was not part of the study protocol, and cannot bear evidential weight.
How does it compare with Greyson?
Greyson is the more careful writer and more consistently declines to conclude. Van Lommel contributed the better single study and argues a stronger position from it. Read the study through Greyson's caution and you have the best of both.
Who should read it?
Anyone interested in the clinical research on near-death experiences, and specifically in what a well-designed prospective study can and cannot establish. Read the study chapters and treat the theoretical ones with considerable scepticism.
Separate the work from the conclusion
This book is a useful exercise in a skill worth having: taking a careful piece of research seriously while declining the interpretation its author attaches to it. Van Lommel did something genuinely valuable, reported a number lower than the one he might have preferred, and then argued past what he had shown. Both things are true and neither cancels the other. You do not have to accept a researcher's metaphysics to respect their study, and you do not have to reject their study because you reject their metaphysics. Holding those apart is most of what critical reading consists of.
Sources & References
- van Lommel, Pim (2007). Consciousness Beyond Life; English edition 2010.
- van Lommel, P. et al. (2001). Near-death experience in survivors of cardiac arrest, The Lancet.
- Greyson, Bruce. After, for the comparison in interpretive caution.
- Hospital studies using concealed visual targets during resuscitation.
- Critical analyses of the dentures case and its timeline.
- Physics literature on decoherence and the limits of quantum non-locality.