Death
Overview
Death is the phenomenon in which the life-sustaining activities of all living organisms irreversibly cease. Biologically, it refers to the permanent cessation of functions in major organs such as the heartbeat, respiration, and brain activity, and there exist various definitions and interpretations from medical, legal, philosophical, religious, and cultural perspectives. For humans, death is the end of life and an unknown realm, and it has been a central theme of thought, art, and ritual throughout human history.
Main Content
Biological Death
Biological death is broadly divided into clinical death and brain death. Clinical death is a state where the heart and respiration have stopped, and in modern medicine, temporary revival is possible through cardiopulmonary resuscitation (CPR) and other methods. Brain death is a state where the functions of the entire brain, including the cerebrum and brainstem, are irreversibly lost; while some bodily functions can be maintained with a ventilator, consciousness, spontaneous breathing, and reflexes are completely absent. At the cellular level, hypoxia and ATP depletion lead to cell membrane destruction, apoptosis, or necrosis, and autolysis and decomposition begin within hours after death.
Medical and Legal Definitions
The medical and legal communities have strived to clearly define the criteria for death. Since the 1968 Harvard Medical School brain death criteria (unresponsiveness, apnea, absence of reflexes, and no brain activity on EEG) were proposed, the 1981 Uniform Determination of Death Act in the United States specified irreversible cessation of circulatory and respiratory functions or irreversible cessation of all functions of the entire brain as the criteria for death. South Korea stipulated brain death determination standards in the Organ Transplant Act of 2000, and as of 2024, brain death determination requires confirmation by two or more specialists at six-hour intervals twice. Legally, death directly affects family register registration, inheritance commencement, and the possibility of organ transplantation.
Philosophical and Religious Perspectives
Death has been a core topic of philosophy since ancient times. Plato viewed death as the separation of the soul from the body, while Epicurus argued the meaninglessness of the fear of death, stating, "When death is, I am not; when I am, death is not." Heidegger defined humans as 'being-toward-death' and believed that the awareness of death enables authentic life. In Eastern thought, Buddhism places death on a continuum of life through the concepts of reincarnation and karma, while Confucianism understood death as an extension of social relationships through ancestor worship and rituals. Major religions have various afterlife views, including Christianity's resurrection and judgment, Islam's Akhirah (afterlife), Hinduism's reincarnation, and Judaism's resurrection in the Messianic Age.
Cultural Rituals and Funerals
Each culture has developed unique rituals for facing death. Traditional Korean funerals consist of complex procedures such as Chojong (初終, initial rites), Soryeom (小殮, encoffining), Daeryeom (大殮, grand encoffining), Seongbok (成服, wearing mourning clothes), Balin (發靷, funeral procession), Hagwan (下棺, burial), and Uje (虞祭,安抚 rites), with strict mourning attire and periods influenced by Confucianism. In modern times, the cremation rate has surged, exceeding 90% as of 2023, and various methods such as natural burial, tree burial, and columbaria have become common. In the West, practices are diversifying from burial-centered to cremation, biodegradable funerals, and space funerals, and there are cultures like Mexico's 'Day of the Dead' (Día de los Muertos) that sublimate death into a festival.
Psychology of Death
Human psychological responses to death are well known through the five-stage model (denial, anger, bargaining, depression, acceptance) proposed by Elisabeth Kübler-Ross. In modern psychology, death anxiety (thanatophobia) is considered one of the fundamental human anxieties, and 'death awareness theory,' which suggests that awareness of death can positively impact the meaning and value of life, is also being studied. In the dying process, hospice and palliative care are emphasized, and discussions on death with dignity and euthanasia are active.
Recent Trends
As of 2024-2025, discussions on death are expanding to include life extension technologies, cryonics, and digital immortality. In aging research, senomorphics (aging suppression) and telomere extension technologies are attracting attention, and some scientists predict that human lifespan could exceed 120 years. Cryonics is an attempt to preserve the body at extremely low temperatures after death for future revival, with over 500 people enrolled worldwide as of 2024, but its scientific feasibility remains controversial. In the concept of digital immortality, 'ghost bot' services that create AI avatars from the deceased's data have emerged, and by 2025, memorial spaces in the metaverse and AI-based digital legacy management platforms are expanding. Legally, the scope of allowing death with dignity (withdrawal of life-sustaining treatment) is expanding; in 2024, South Korea saw the number of implementations of life-sustaining treatment decisions exceed 100,000 cases. Additionally, experiences with climate change and pandemics have influenced social perceptions of death, increasing interest in 'green funerals' (eco-friendly funerals) and 'death education.'
Related Topics
- [[Brain death]]
- [[Funeral]]
- [[Euthanasia]]
- [[Afterlife]]
- [[Hospice]]
- [[Aging]]
- [[Bioethics]]
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