Rebirth in Buddhism

Rebirth refers to a process whereby beings go through a succession of lifetimes as one of many possible forms of sentient life, each running from conception to death. It is important to note, however, that Buddhism rejects concepts of a permanent self or an unchanging, eternal soul, as it is called in Christianity or even Hinduism. As there ultimately is no such thing as a self (anatta), rebirth in subsequent existences must rather be understood as the continuation of a dynamic, ever-changing process of "dependent arising" (Pratītyasamutpāda) determined by the laws of cause and effect (Karma) rather than that of one being, "jumping" from one existence to the next.

Each rebirth takes place within one of five realms, according to Theravadins, or six according to other schools. These are further subdivided into 31 planes of existence:

1. Naraka beings: those who live in one of many Narakas (Hells)
2. Animals: sharing some space with humans, but considered another type of life
3. Preta: Sometimes sharing some space with humans, but invisible to most people; an important variety is the hungry ghost
4. Human beings: one of the realms of rebirth in which attaining Nirvana is possible
5. Asuras: variously translated as lowly deities, demons, titans, antigods; not recognized by Theravada (Mahavihara) tradition as a separate realm.
6. Devas including Brahmas: variously translated as gods, deities, spirits, angels, or left untranslated

Rebirths in some of the higher heavens, known as the Śuddhāvāsa Worlds (Pure Abodes), can be attained only by anāgāmis (non-returners). Rebirths in the arupa-dhatu (formless realms) can be attained only by those who can meditate on the arupa-jhānas.

According to East Asian and Tibetan Buddhism, there is an intermediate state between one life and the next, but Theravada rejects this.