What are the main religious, philosophical, and scientific perspectives on what happens after we die?

Religious perspectives

Most religions describe the afterlife as the continuation of a person's identity or consciousness after the body dies, either in another realm or through rebirth [8][9]. A very common idea is that how you lived determines what happens next [11].

Christianity and related traditions

• Mainstream Christianity professes belief in "the resurrection of the dead, and the life of the world to come," and commonly pictures a clear choice between heaven and hell [19][44].
• Catholic teaching says the soul is judged after death: pure souls enter heaven, those in unrepented mortal sin go to hell, and those not perfectly purified undergo purification before paradise [1][2][42].
• Orthodox Christianity teaches that the final judgment is a single encounter with divine love and mercy, experienced differently depending on how compatible each person has become with God [20].
• Latter-day Saints believe spirits first go to temporary Spirit Prison or Paradise, then after resurrection are assigned to one of three degrees of glory: Celestial, Terrestrial, or Telestial [21].
• Jehovah's Witnesses expect a bodily resurrection of the righteous and unrighteous after Armageddon, but not the wicked [22].
• Seventh-day Adventists believe the dead "remain unconscious until the return of Christ in judgment" rather than going straight to heaven or hell [23].
• Some Unitarian Universalists believe in universalism: all souls will ultimately be saved, and there are no torments of hell [40].
• Some Biblical interpretations say that after death spirits go to Paradise to be perfected, and some are purified of sins in hell [43].

Islam

Islam teaches a Day of Judgment when God raises all people from the dead and evaluates their worldly actions [24]. The Quran and hadith describe the pleasures of paradise (Jannah) and the sufferings of hell (Jahannam) in vivid detail [3][45]. Muslims and scholars disagree about whether hell is eternal or whether all the condemned will eventually be forgiven [25].

Judaism

Jewish views are diverse. After death the soul is brought for judgment; those who lived pristine lives enter the world to come (Olam Haba), while most experience a period of reflection on their earthly actions [18]. Jewish scripture mentions heaven (Gan Eden) and hell (Gehinnom), but there is strong emphasis on leading a purposeful, ethical life now [48]. In the Hebrew Bible, Sheol is a dark place to which all the dead go, righteous and unrighteous alike [17].

Eastern traditions

• Buddhism teaches rebirth without an unchanging self or soul passing from one form to another; the type of rebirth is conditioned by karma [4]. Theravada Buddhism lists 31 realms of existence into which one can be reborn [27], and Tibetan Buddhism describes an intermediate state between death and reincarnation [28]. The cycle of samsara continues until nirvana, a state that ceases all suffering and desires [47]. In Buddhist philosophy, the individual self is seen as a delusion that dissolves or becomes liberated into nirvana [143].
• Hinduism has both philosophical and mythical views of the afterlife [29]. In the mythical view, after exhausting karma in heaven or hell, the person is reborn and continues spiritual evolution [30]. This cycle, called samsara, is driven by karma, and the goal is moksha, freedom from the cycle [46]. Nontheistic forms of Hinduism and Buddhism treat reincarnation as part of cosmic justice, with liberation depending on karma [160].
• Jainism believes the soul takes on a new body form based on previous karmas or actions [31].
• Sikhism teaches that the soul is never born and never dies; it is a part of God and lives forever [32].

Other traditions

• The Bahá'í writings say the soul is immortal and, after death, continues to progress until it finally attains God's presence [26].
• Zoroastrianism holds that souls are judged by whether good or bad deeds outweigh, leading to paradise or hell [36].
• Taoism views life as an illusion and death as a transformation into immortality [34]. Confucius did not directly discuss the afterlife, but Chinese folk religion influenced Confucianism so that ancestors become deified spirits after death [33].
• Many pagan belief systems hold that the dead go to a specific place such as paradise or the underworld, determined by the gods based on actions and beliefs [5]. Wicca describes The Summerland, where souls rest and reflect before being reincarnated [6].
• Most traditional African societies lack clear-cut notions of heaven and hell, although many believe God judges the soul after death; the Yoruba, Dogon, and LoDagoa have ideas closer to Abrahamic religions [35]. Some Native American tribes believe in a peaceful afterlife like the Happy Hunting Ground, where souls reunite with ancestors [49].
• Some hunter-gatherer societies, such as the Hadza, have no particular belief in an afterlife; death is simply the end of existence [41].

Beliefs that death is the end

Many atheists generally view death as the cessation of consciousness and existence, with no place to go after dying [50]. Agnostics do not reject the idea of God but say they do not know what the afterlife holds or whether God exists [51].

Reincarnation as a special case

Reincarnation is the philosophical or religious conjecture that an aspect of a living being starts a new life in a different physical body or form after each death [10]. All major Indian religions, including Buddhism, Hinduism, Jainism, and Sikhism, have their own interpretations of it [7]. Although most Abrahamic denominations reject reincarnation, some groups within these religions accept it, including followers of Kabbalah, the Cathars, Alawites, the Druze, and the Rosicrucians [12].

Philosophical perspectives

Philosophical views range from arguments that the soul survives to arguments that death is simply the end.

• Plato affirmed both a pre-natal life of the soul and its continued life after the death of the body [140], arguing for the immortality of the soul, a virtuous life in preparation for the afterlife, and the pursuit of eudaimonia [165]. He used the story of Er to support belief in an afterlife [116]. Socrates also spent a dialogue arguing that the soul lives on after death, and Pascal's Wager argues for belief in God [138].
• Epicurus argued that death is not experienced: "When I am, death is not, and when death is, I am not" [58].
• Epictetus held that death is a person's ceasing to be, and that death should not be feared because we will not exist after death [141].
• The ancient Greeks valued survival in the memory and honor of the community, but that was a supplement to, not a replacement for, what they saw as a colorless existence in Hades [144].
• Heraclitus considered a revenant to be someone who returned to guard both the living world and the world of the dead [115], while Democritus believed near-death experiences were simply the body's process of slowly slipping away as death approached [116].
• Philosophical arguments exist that try to establish that human souls are immortal, but not arguments about the specific nature of the afterlife [139].
• If dualism is true, an immaterial soul opens the door to possible survival after death [147]. Cartesian souls are "naturally immortal" because nothing can make them cease to be except God no longer sustaining them [148].
• The major theistic traditions typically locate the afterlife in bodily resurrection [149]. For materialist versions of resurrection, the central logical problem is personal identity, since nothing bridges the gap between the body that perishes and the body resurrected; identity-preserving materialist resurrection has not been shown conclusively impossible, but the difficulties are formidable [150][151].
• Kant argued that immortality should be postulated because only an endless life makes possible continued moral progress toward the moral law [157][158].
• Some argue that if there is no afterlife, the problem of evil becomes impossible to solve in any rationally intelligible way [159].
• Open individualism, a view named by Daniel Kolak, concludes that individual conscious experience is illusory and that, because consciousness continues in all conscious beings, you do not die [37].
• Process philosophy and theology, particularly Hartshorne's view, teaches objective immortality in God's memory rather than subjective personal immortality [38][145].
• Ronald Dworkin thought some kind of individual afterlife may be possible even under atheistic naturalism, and proposed a "kind of immortality" that is "the only kind we have any business wanting" [146].
• Some philosophers use Occam's razor to argue against the existence of an afterlife [39]. Physicalist researchers start from the premise that no functioning brain means no consciousness and no life after death [133].
• A naturalistic, materialist, non-dualist philosophy argues that death is not a plunge into nothingness, because nothingness cannot be positively existent; awareness is constant for the subject, and after death we continue as generic subjectivity in contexts the physical universe creates [56][59][60][63][64]. This is not conventional immortality: everything a person consists of is erased, no "one" survives, and only subjectivity itself persists [61][62][65]. The same essay quotes Robert Nozick's view that this life is the only existence there is and afterward there is nothing [66], and Isaac Asimov's statement that there will be "just nothingness" after death [67].
• A nihilist "deathconsciousness" philosophy holds that awareness of one's death provides no reason to live, that "Death is Life," and that negation is more powerful than life and will ultimately destroy the universe [53][54][55].
• Philosopher William James wrote that death may be intended by the creator to remain baffling, "to prompt our curiosities and hopes and suspicions all in equal measure" [130].
• One personal philosophical view holds that when someone dies, their consciousness does not disappear completely but continues through a living person [52].
• A contemporary "Afterlife Apologetics" paper presents three philosophical arguments: for the afterlife, for human consciousness as distinct from the physical brain, and for heavenly visions, with pastoral reflection on near-death and deathbed experiences [162][163][164].
• Philosophers also note that belief in life after death is often grounded in reasons internal to religious traditions: Jews rely on the visions of Ezekiel and rabbinic traditions, Muslims on the prophecies of the Quran, and Christians on the resurrection of Jesus [161].

Scientific perspectives

Science approaches the question mainly through studies of near-death experiences (NDEs) and brain activity around the time of death.

Near-death experiences

• NDEs are defined as deep psychic, conscious, semi-conscious, or recollected experiences of someone approaching or temporarily beginning the dying process, usually in life-threatening conditions [70]. They have been reported since ancient times and are described today by about 10 percent of people whose hearts stop [99].
• Prevalence estimates vary: studies report NDEs in 3.6 to 23 percent of cardiac-arrest patients [91], and about 20 percent of cardiac-arrest survivors report some form of NDE [119]. A 2001 Lancet study found that one out of 10 cardiac-arrest patients comes back with a new core memory [102].
• Researchers categorize NDEs into four main groups with 19 subcategories: emotional, cognitive, spiritual/religious, and supernatural experiences [74]. The most frequent reports are supernatural experiences, especially the feeling of leaving the body [75].
• There is a common core to many NDEs: out-of-body experiences, passing through a tunnel toward a dazzling light, heightened senses, a sense of peace and well-being, life review, encounters with deceased loved ones or religious figures, and a feeling of oneness or merging with everything [76][93][89][88][106][118]. Many people also describe reaching a point of no return, such as a tunnel or bridge [112].
• Heavenly scenes are reported more often than hellish or purgatory scenes in NDE studies [90].
• NDE content is influenced by culture and religion. Western experiencers often describe Christian figures, Thai experiencers often describe Hindu death messengers called Yamatoots, and Shiite experiencers report Shiite imams [72][73][79][80][81]. The underlying patterns seem similar, with differences mainly in explanation and interpretation [85][86][87].
• Researchers argue NDEs are not dreams, hallucinations, or psychiatric disturbances; they are clear, persistent, and sometimes medically inexplicable [83][96][104].
• NDEs often produce positive changes: reduced fear of death, increased sense of meaning, altruism, and spiritual growth [84][98][107]. They can reshape a patient's view of the world, the afterlife, and their own identity [103].
• Some NDEs involve veridical perceptions, meaning experiencers acquire verifiable information they could not have obtained by normal means [94]. These cases bear on whether the mind can function outside the physical body and whether we may survive bodily death [95]. Some accounts describe objects in places out of reach to anyone in the room [109], and the AWARE study reported a verified case of visual awareness during cardiac arrest in which recollections corresponded with actual events [110].

Brain activity around death

• Research into NDEs shows the human brain can retain consciousness after the heart stops and blood flow ceases [120]. The cerebral cortex can remain fully functional for two to twenty seconds after the heart stops pumping blood [121].
• A 2023 study reported that people almost certainly retain some form of consciousness and awareness briefly after clinical death [123]. Other studies found increased gamma-wave activity after the heart stops [124], a spike in brain electrical activity shortly before death in animals [122], and a surge of brain activity in a dying patient after oxygen was removed [136]. One neuroscientist says the brain is "actually super active during cardiac arrest" [137], and some data suggest the brain may retain hints of activity after physical death for hours or days [101].
• New research suggests the line between life and death may be less distinct than previously thought [128]. Death is a process, not a single point, and can sometimes be reversed [135]. In most jurisdictions, clinical death occurs when the heart stops beating and a person stops breathing [127].

Scientific explanations and open questions

• Scientific theories of NDEs fall into two broad groups: those linking NDEs to physiological changes in the brain, and those seeing them as a psychological reaction to approaching death [71]. Proposed mechanisms include slowed blood flow to the brain and a sudden surge of electrical impulses [125], and gamma waves in brain areas associated with religious or spiritual experience, or simply conditioned expectations of what dying should look like [126]. Researchers have also identified an affinity between NDEs and altered states produced by psychedelics such as DMT [108].
• Some researchers, spiritualists, and parapsychologists interpret NDEs as evidence that consciousness can persist independently of the brain and may survive death [97][129][131][132]. Some predict that science will eventually conclude consciousness is not produced by the brain and does not die when you die [134].
• The Stanford Encyclopedia of Philosophy summarizes the empirical picture: evidence from parapsychology and NDEs provides some, but not conclusive, evidence for personal survival after death [152]; NDEs have recurring elements forming a general pattern [153]; interpretations of NDEs as literally revealing the afterlife are extremely questionable [154]; many features vary with cultural expectations [155]; and the evidence may be close to an impasse [156].
• Scientists have systematically studied NDEs since the late 20th century but have not reached a definitive conclusion about them [117].
• In religion and philosophy, the soul is understood as the immaterial essence that confers individuality and transcends the body [77], and the idea that the individual is connected to the whole of the world appears in many traditions [82].
• Patient-centred, evidence-informed frameworks recommend that health-care providers validate and explore patients' near-death experiences with openness and nonjudgmental tones [111].
• Historically, ancient cultures and philosophers such as the Greeks documented accounts of people who returned from the brink of death, and early burial practices with goods suggest a belief in an afterlife [113][114].

The evidence does not settle the question. Religious traditions offer vivid pictures of judgment, paradise, rebirth, or union with the divine; philosophers argue both for and against survival; and scientists continue to study puzzling experiences and brain activity around death without a final verdict [117][156].