There are moments in the history of science after which a debate cannot be conducted as before. In near-death research that moment is 15 December 2001: on that day The Lancet – one of the world's most prestigious medical journals – published a paper soberly titled "Near-death experience in survivors of cardiac arrest: a prospective study in the Netherlands". First author: Pim van Lommel, a Dutch cardiologist. With this, the near-death experience moved from a "soft" phenomenon to something documented in one of the toughest medical journals according to all the rules of prospective clinical research. Anyone who, since then, falls back on calling NDEs "purely anecdotal" has a problem of argument.
Who is Pim van Lommel?
Pim van Lommel was born on 15 March 1943 in Laren, North Holland. He studied medicine at Utrecht University and specialised in cardiology. For 26 years – from 1977 to 2003 – he worked as a cardiologist at Rijnstate Hospital in Arnhem. His background is therefore the exact opposite of a fringe scientist: a practising clinical physician focused on cardiac care, who for decades performed resuscitations as part of his daily work.
His interest in near-death experiences arose precisely from this clinical practice. Several patients who returned from cardiac arrest reported experiences he could not reconcile with the classical neurological picture of an "unconscious brain". In 1986 he read George Ritchie's book Return from Tomorrow and decided to investigate the phenomenon systematically – instead of continuing to push it aside as an anomaly.
The study: design and scale
What van Lommel started in 1988 was methodologically revolutionary. Until then, NDE studies had almost always been retrospective: researchers found reports and analysed them after the fact – with all the classic biases (selection, memory distortion, self-presentation). Van Lommel reversed the approach:
- Prospective design. Patients were identified before being interviewed: every cardiac arrest survivor entered the dataset – whether or not they later reported an NDE.
- Multicentre. Ten Dutch hospitals participated, reducing site bias.
- 344 patients were included over several years. A substantial sample for a phenomenon previously dismissed as "too rare to be scientifically tractable".
- Standardised measurement. Reports were coded with the Greyson NDE Scale – ensuring compatibility with the entire international research literature.
- Long-term follow-up. Patients were re-examined two and eight years after the event – an effort unprecedented in NDE research at the time.
- Control group. Patients with the same medical event (cardiac arrest) but without NDE formed the comparison group – allowing trauma effects to be cleanly separated from NDE effects.
The key findings
1. Frequency
62 of 344 patients (18 %) reported an NDE on the Greyson scale; 41 of these (12 %) had a "deep" NDE with marked core elements. This single number disposes of the idea that NDEs are exotic individual cases.
2. What does not explain the NDE
Van Lommel systematically compared which medical or psychological factors correlated with the occurrence of an NDE. The result surprised many colleagues:
- Duration of oxygen deprivation: no correlation. Patients with longer cardiac arrest were not more likely to have an NDE than those with a shorter one.
- Medications administered (anaesthetics, sedatives): no correlation.
- Fear of death before the event: no correlation.
- Religiousness or prior belief in life after death: no correlation.
- Prior knowledge of NDE: no correlation.
With that, the most popular reductionist explanations fell away one after another.
3. The famous dentures case
Probably the most-cited individual case in the study concerns a 44-year-old man who was brought into the clinic comatose after a myocardial infarction with cardiac arrest. A nurse removed his dentures during resuscitation and placed them in a drawer of the crash cart. After the successful resuscitation he remained intubated and ventilated for a week. When he woke up, he saw the nurse who had removed the dentures and said, in essence:
"Oh, that nurse knows where my dentures are – she put them in the drawer of the crash cart."
The patient subsequently described details from the resuscitation room that he could not have perceived from his position – unconscious, eyes closed, in deep resuscitation. The case is not as spectacular as Pam Reynolds, but methodologically comparable: the nurse who removed the dentures was an objective witness; the perception was veridical.
4. Personal transformation – the decisive point
Perhaps the most consequential finding came from the long-term follow-up. After two and eight years, van Lommel measured the psychological changes in both groups:
- The NDE group showed massive, persistent shifts: greatly reduced fear of death, increased capacity for love and empathy, a turn from material to relational orientation, increased spiritual interest, often a change of profession.
- The control group – patients with the same cardiac arrest, same resuscitation, but no NDE – did not show these changes.
A central sceptical objection thereby fell: that it is the medical trauma that changes patients, not the NDE. The control group shows that this is simply not the case. It is not the cardiac arrest that transforms people – it is the experience.
"The content of an NDE and the effects on patients seem similar worldwide, across all cultures, and at all times. The subjective nature of the experience, however, does not permit a typical 'dying brain' explanation."
— van Lommel et al., Lancet 2001 (paraphrased from the conclusion)
Why The Lancet matters
It is worth pausing to recognise where this study appeared. The Lancet has been one of the world's leading medical journals since 1823, with a current impact factor of around 100 – only the New England Journal of Medicine plays in the same league. Acceptance rates run below 5 %, peer review is notoriously tough, the reputational risk for the authors substantial. A Lancet publication on NDE means that data and methodology have withstood extremely sceptical review.
Van Lommel's book and his theory
In 2007 his book first appeared in Dutch as "Eindeloos Bewustzijn", in 2009 in German as "Endloses Bewusstsein", and in 2010 in English as "Consciousness Beyond Life". The book elaborates the Lancet study at length, supplements it with international comparative data, and develops a theoretical position. Van Lommel's central hypothesis: consciousness is non-local – it does not arise in the brain, but is merely received and filtered by it. As an analogue model he points to quantum phenomena (entanglement, non-locality); he explicitly invokes information-theoretic models of consciousness, in line with Hameroff/Penrose or Tononi.
This theoretical extension is contested – including among researchers who accept his empirical findings. But it is a serious answer to the question of how what the study shows could possibly be – not merely "the phenomenon is there, more we don't know".
Critics and their limits
The study has not gone unchallenged. The Dutch neurobiologist Dick Swaab acknowledges van Lommel's contribution to documentation but criticises "Consciousness Beyond Life" for not engaging sufficiently with established neuroscientific mechanisms. Gerald Woerlee, who also appears as a critic in the Pam Reynolds case, raises the anaesthesia-awareness argument.
However, neither objection captures the core findings: they may explain how a single perceptual event might come about – they cannot explain the control-group data on personality transformation, nor the absent correlation with oxygen-deprivation duration. The statistical robustness of the main results cannot be undermined with "everything is neurologically known".
Impact and standing
The Lancet study changed NDE research in several respects:
- It moved the field into the mainstream. After 2001 the near-death experience was no longer a fringe topic but a research subject published in a top journal.
- It defined the standard for follow-up studies. Sam Parnia's AWARE and AWARE-II studies largely follow van Lommel's methodological architecture (prospective, multicentre, with control group).
- It shifted the framing of the debate. Arguments such as "NDEs result from oxygen deprivation" or "trauma changes people, not the experience" are no longer tenable in their easy form after 2001.
Today, almost 25 years after publication, the paper has well over 1,000 scientific citations and is one of the most-cited contributions to consciousness research at the end of life.
Context
This article complements the Heaven Connect series on the scientific framing of near-death experiences and mediumistic work: Lazar's EREAMS study (a mediumistic study in the same methodological spirit), Bruce Greyson (the measurement instrument van Lommel used), Pam Reynolds (the most spectacular single case), Wilfried Kuhn and Walter van Laack (the German-speaking neurological and medical perspective), Godehard Brüntrup (philosophical framing), Elisabeth Kübler-Ross (pioneer), Bösch/Claes (clinical integration), matter and the Higgs field (physics of the concept of matter). Where Greyson provides the measurement tool, van Lommel provides the large prospective dataset on which this tool first proved its worth.
Sources:
• van Lommel P., van Wees R., Meyers V., Elfferich I., Near-death experience in survivors of cardiac arrest: a prospective study in the Netherlands, The Lancet, 15 December 2001, 358(9298):2039–2045.
• Pim van Lommel, Consciousness Beyond Life: The Science of the Near-Death Experience, HarperOne 2010 (German edition: Endloses Bewusstsein, Patmos 2009; Dutch original: Eindeloos Bewustzijn, 2007).
• Wikipedia: Pim van Lommel(link).
• Bruce Greyson (1983), The Near-Death Experience Scale, Journal of Nervous and Mental Disease – the scale used to code the Lancet study.
• Sam Parnia et al., AWARE-II: Awareness during Resuscitation, Resuscitation 2023.
• Dick Swaab, We Are Our Brains (critical counter-position, Random House 2014).
For more, see our curated knowledge collection – interview videos with Pim van Lommel are linked there as well.