For most of the medical community, the cessation of the heartbeat and the flatline of an EEG signal mark a definitive end. The prevailing clinical view is one of medical materialism: the mind is a product of the brain, and when the brain dies, consciousness vanishes. However, Professor Jung Hyun-chae, a professor emeritus at Seoul National University College of Medicine and a recognized authority in gastroenterology, is challenging this binary.
Drawing from two decades of lecturing on thanatology—the scientific study of death—Professor Jung suggests that the boundary between life and death may be more porous than traditional textbooks allow. During a recent appearance on the program You Quiz on the Block, Jung detailed why a career spent in the rigorous environment of one of Korea’s top medical institutions led him to believe in the persistence of consciousness after biological death.
The core of Jung’s perspective rests on the belief that consciousness does not simply shut off like a light switch. He points to a significant gathering of scientists and physicians in Arizona in 2015, where a consensus was reached across 11 declarations suggesting that consciousness can continue even after the physical body has succumbed to death. This shift in thinking moves the conversation from the realm of spiritual speculation into the territory of clinical observation.
The Surgeon’s Awakening: A Case of Out-of-Body Experience
To illustrate the afterlife beliefs of SNU medical professor Jung Hyun-chae, he shared a poignant account involving two physicians in the United States. The story, relayed to him by a member of the Korean Medical Association, centers on a conflict of prejudice and a miracle of survival.
The narrative involves an American surgeon who held deep-seated biases against his Asian colleagues, frequently belittling a Korean anesthesiologist on his staff. This professional tension reached a breaking point when the surgeon himself suffered a sudden, catastrophic cardiac arrest. For 30 minutes, the American medical team performed cardiopulmonary resuscitation (CPR), but the surgeon showed no signs of revival. As the team prepared to call the time of death, the Korean anesthesiologist insisted on continuing, taking over the chest compressions alone.
After a grueling 50-minute struggle, the surgeon was dramatically revived. However, the most striking part of the recovery was not the survival itself, but the surgeon’s report of what happened while he was clinically dead. The surgeon described a vivid out-of-body experience (OBE), claiming he had floated above his own body and witnessed the entire scene.
From this vantage point, the surgeon saw the very man he had spent years mocking—the Korean anesthesiologist—covered in sweat, refusing to give up on him when everyone else had. Upon waking, the surgeon’s attitude underwent a total transformation, acknowledging that the man he had dismissed was the only person who had truly saved him. Jung emphasizes that the significance of this event lies in the fact that it was experienced by a physician—the group most likely to be skeptical of such claims—and witnessed by colleagues.

Beyond the Anecdote: The Framework of Thanatology
While the surgeon’s story provides a powerful emotional hook, Professor Jung views it as one piece of a larger puzzle. He categorizes these phenomena under the broader umbrella of thanatology, arguing that several patterns of evidence suggest the existence of a post-death reality.
Beyond near-death experiences, Jung points to three other primary indicators:
- End-of-Life Experiences: The frequent reports of dying patients seeing deceased loved ones or experiencing a sense of peace and preparation shortly before death.
- Children’s Memories of Past Lives: Cases where young children provide specific, verifiable details about lives they could not have known through conventional means.
- After-Death Communication: Instances where survivors report meaningful, non-hallucinatory communication from the deceased.
From a medical writing perspective, these reports are often dismissed as “hallucinations” caused by hypoxia (oxygen deprivation to the brain) or the release of DMT during the dying process. However, Jung and other proponents of consciousness studies argue that the clarity, structure, and verifiability of these experiences—such as the surgeon seeing specific events in the room—cannot be fully explained by a malfunctioning, dying brain.
Comparing Clinical Perspectives on Consciousness
| Feature | Medical Materialism | Thanatological Perspective |
|---|---|---|
| Origin of Mind | Product of brain activity | Independent or non-local consciousness |
| NDE/OBE Cause | Hypoxia or chemical surge | Actual separation of consciousness |
| Death Definition | Irreversible cessation of function | Transition of consciousness |
| Evidence Base | Neurological imaging/Physiology | Clinical reports and case studies |
Why This Matters for Modern Medicine
The implications of Professor Jung’s beliefs extend beyond curiosity about the afterlife. In a clinical setting, acknowledging the possibility of a continuing consciousness changes the way physicians approach end-of-life care. When death is viewed not as a sudden void but as a transition, the focus shifts toward psychological comfort and the dignity of the patient’s final journey.

For many doctors, admitting a belief in the afterlife can lead to professional ridicule. Jung acknowledges this tension, noting that such topics are often met with “mockery and laughter.” Yet, he argues that the humility to accept what we do not yet understand is the hallmark of a true scientist. By integrating these experiences into the medical discourse, the field can move toward a more holistic understanding of the human condition.
Disclaimer: The information presented in this article is based on the personal beliefs and academic lectures of Professor Jung Hyun-chae and reports of near-death experiences. It is provided for informational purposes and does not constitute medical advice or a universally accepted scientific consensus on the nature of consciousness.
As research into the brain and consciousness continues to evolve, the dialogue between traditional neurology and thanatology is expected to deepen. The next critical step for this field will likely involve more rigorous, prospective studies of patients who survive cardiac arrest, aiming to provide empirical data that could either validate or refute these extraordinary claims.
We invite you to share your thoughts on the intersection of medicine and consciousness in the comments below.
