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== Animals==
== Animals==
The short-tailed [[Cricket (insect)|cricket]] is known to eat its own wings.<ref>{{cite book |url=https://books.google.com/books?id=sO6ax1TtnzEC |title=Invertebrates of Central Texas Wetlands |first=Stephen Welton |last=Taber |author2=Scott B. Fleenor |publisher=Texas Tech University Press |year=2005 |isbn=978-0-89672-550-8 |page=200}}</ref> There is evidence of certain animals digesting their own nervous tissue when they transition to a new phase of life. The [[sea squirt]] (with a tadpole-like shape) contains a ganglion "brain" in its head, which it digests after attaching itself to a rock and becoming stationary, forming an [[sea anemone|anemone]]-like organism. This has been used as evidence that the purpose of brain and nervous tissue is primarily to produce movement. Self-cannibalism behaviour has been documented in North American [[rat snake]]s: one captive snake attempted to consume itself twice, dying in the second attempt. Another wild rat snake was found having swallowed about two-thirds of its body.<ref>{{cite book |author=Mattison, Chris |title=The New Encyclopedia of Snakes |publisher=Princeton University Press |location=Princeton, N.J. |year=2007 |isbn=978-0-691-13295-2 |page=105}}</ref>
The short-tailed [[Cricket (insect)|cricket]] is known to eat its own wings.<ref>{{cite book |url=https://books.google.com/books?id=sO6ax1TtnzEC |title=Invertebrates of Central Texas Wetlands |first=Stephen Welton |last=Taber |author2=Scott B. Fleenor |publisher=Texas Tech University Press |year=2005 |isbn=978-0-89672-550-8 |page=200}}</ref> There is evidence of certain animals digesting their own nervous tissue when they transition to a new phase of life. The [[sea squirt]] (with a tadpole-like shape) contains a ganglion "brain" in its head, which it digests after attaching itself to a rock and becoming stationary, forming an [[sea anemone|anemone]]-like organism. This has been used as evidence that the purpose of brain and nervous tissue is primarily to produce movement. Self-cannibalism behaviour has been documented in North American [[rat snake]]s: one captive snake attempted to consume itself twice, dying in the second attempt. Another wild rat snake was found having swallowed about two-thirds of its body.<ref>{{cite book |author=Mattison, Chris |title=The New Encyclopedia of Snakes |publisher=Princeton University Press |location=Princeton, N.J. |year=2007 |isbn=978-0-691-13295-2 |page=105}}</ref> [[Ball python|Ball pythons]] are also documented, via online discussion<ref>{{Cite web |title=Accidental self biting? |url=https://ball-pythons.net/forums/showthread.php?249669-Accidental-self-biting |access-date=2024-09-19 |website=ball-pythons.net}}</ref>, to occasionally attempt autocannibalism, but much like other snakes these instances are accidental and a result of poor coordination or confusion that ends in the snake striking itself instead of its prey.<ref>{{Cite web |last=Willetts |first=Mitchell |date=April 05, 2022 |title=Texas researcher comes across odd sight |url=https://www.star-telegram.com/news/nation-world/national/article260129305.html |url-status=live |website=Fort Worth Star-Telegram}}</ref>


==References in myths and legends==
==References in myths and legends==

Revision as of 20:54, 19 September 2024

Self-cannibalism is the practice of eating parts of one's own body, also called autocannibalism[1] or autosarcophagy.[2] Generally, only the consumption of flesh (including organ meat such as heart or liver) by an individual of the same species is considered cannibalism.[3] In line with this usage, self-cannibalism means the consumption of flesh from one's own body. While some texts use this strict definition,[4] others use the term autocannibalism in a wider sense that includes the consumption of hair or nails from one's own body.[5]

Both humans and some animal species occasionally practice self-cannibalism. In humans, it can be a symptom of a mental disorder, but there are also a handful of people who have voluntarily consumed an amputated body part. In other cases, people were forced to eat parts of themselves as a form of torture.

A similar term that is applied differently is autophagy, which specifically denotes the normal process of self-degradation by cells. While typically used only for this specific process, autophagy has nonetheless occasionally been used as a general synonym for self-cannibalism.[6]

Humans

See also: List of autocannibalism incidents

As a disorder or symptom thereof

Main article: Autophagia

Fingernail-biting that develops into fingernail-eating is a form of pica. Other forms of pica include dermatophagia,[7] and compulsion of eating one's own hair, which can form a hairball in the stomach. Left untreated, this can cause death due to excessive hair buildup.[8]

Self-cannibalism can be a form of self-harm and a symptom of a mental disorder.[4] Some also consider it a mental disorder in its own right, but it is not listed in the widely used DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition).[5]

As a choice

Some people will engage in self-cannibalism as an extreme form of body modification, for example, by ingesting parts of their own skin.[6] In very rare cases, people have eaten a part of their own body (such as a foot) that had to be amputated for medical reasons; such acts may be motivated by curiosity or a desire to attract attention.[9][10][11]

Some people drink their own blood, a practice called autovampirism,[12] but sucking blood from wounds is generally not considered cannibalism.[3][5]

As a crime

Elizabeth Báthory may have forced some of her servants to eat their own flesh

Forced self-cannibalism as a form of torture or war crime has been reported. Elizabeth Báthory allegedly forced some of her servants to eat their own flesh in the early 17th century.[13] During the violence that followed the 1991 Haitian coup d'état, victims sometimes had to eat their own hacked-off body parts.[14] In the 1990s, young people in Uganda were forced to eat their own ears.[15]

Eating one's own placenta has a small following in Western cultures,[16] fostered by celebrities like January Jones.[17] Human placentophagy after childbirth is touted by some as a treatment for postpartum depression and fatigue, among other health benefits,[18] given its high protein, rich iron and nutrient content.[19] However, scientific research is inconclusive as to whether consuming the placenta has any health benefits, exceeding that of readily acquired meats.[20]

While the status of placentophagy as cannibalism is debated, Harriet Hall has pointed out that "placental tissue is mainly derived from the fertilized egg and carries the fetus's genome", suggesting that the placenta is a temporary organ of the fetus rather than of the mother.[21] Therefore, even if one considers placentophagy a form of cannibalism, a mother eating her baby's placenta after giving birth would not practice self-cannibalism.

Animals

The short-tailed cricket is known to eat its own wings.[22] There is evidence of certain animals digesting their own nervous tissue when they transition to a new phase of life. The sea squirt (with a tadpole-like shape) contains a ganglion "brain" in its head, which it digests after attaching itself to a rock and becoming stationary, forming an anemone-like organism. This has been used as evidence that the purpose of brain and nervous tissue is primarily to produce movement. Self-cannibalism behaviour has been documented in North American rat snakes: one captive snake attempted to consume itself twice, dying in the second attempt. Another wild rat snake was found having swallowed about two-thirds of its body.[23] Ball pythons are also documented, via online discussion[24], to occasionally attempt autocannibalism, but much like other snakes these instances are accidental and a result of poor coordination or confusion that ends in the snake striking itself instead of its prey.[25]

References in myths and legends

Ouroboros biting its own tail

The ancient symbol Ouroboros depicts a serpent biting its own tail.

Erysichthon from Greek mythology ate himself in insatiable hunger given him, as a punishment, by Demeter.

In an Arthurian tale, King Agrestes of Camelot goes mad after massacring the Christian disciples of Josephus within his city, and eats his own hands.

In 1679, Philip Rohr published a study of what he called "grave eating" or "the chewing dead".[26][27] The book brought together a wealth of accounts of corpses thought to have "consumed their own shrouds and winding cloths, and even their own limbs and bowels". Rohr also described particular sounds supposedly heard from the graves when a corpse either "laps like some thirsty animal" or chews, grunts, and groans.[28] The 18th century also produced a considerable amount of literature on the subject.[29]

See also

Notes

  1. ^ "Man-eaters: The Evidence for Coastal Tupi Cannibalism". mei(sh) dot org. Archived from the original on 25 June 2006. Retrieved 3 May 2007.
  2. ^ Mikellides AP (October 1950). "Two cases of self-cannibalism (autosarcophagy)". Cyprus Med J. 3 (12): 498–500. PMID 14849189.
  3. ^ a b "Cannibalism Definition". Dictionary.com. Retrieved 17 July 2023.
  4. ^ a b Yilmaz, Atakan; Uyanik, Emrah; Şengül, Melike C. Balci; Yaylaci, Serpil; Karcioglu, Ozgur; Serinken, Mustafa (August 2014). "Self-Cannibalism: The Man Who Eats Himself". The Western Journal of Emergency Medicine. 15 (6): 701–2. doi:10.5811/westjem.2014.6.22705. PMC 4162732. PMID 25247046.
  5. ^ a b c Mbabazi, Joan (17 January 2021). "Auto-cannibalism; strange but real mental illness". The New Times. Retrieved 17 July 2023.
  6. ^ a b Benecke, Mark (25 August 2013). "Body Modification, Autophagy". Retrieved 16 July 2023.
  7. ^ Hayden, Danielle (5 November 2018). "What to Know About Dermatophagia, the 'Skin-Eating' Disorder That Causes Me to Gnaw at My Own Fingers".
  8. ^ Sah, Deborah E; Koo, John; Price, Vera H (2008). "Trichotillomania". Dermatol Ther. 21 (1): 13–21. doi:10.1111/j.1529-8019.2008.00165.x. PMID 18318881.
  9. ^ "Conheça 10 histórias perturbadoras de canibalismo humano". R7 (in Brazilian Portuguese). 31 January 2016. Retrieved 19 July 2023.
  10. ^ "This Guy Served His Friends Tacos Made from His Own Amputated Leg". Vice. 12 June 2018. Retrieved 24 November 2018.
  11. ^ Kinsey, Joe (9 May 2023). "Instagram Model Paula Gonu Makes Spaghetti Bolognese out of Her Knee Cartilage". OutKick. Retrieved 21 May 2023.
  12. ^ Bourguignon, A (February 1977). "[Status of vampirism and autovampirism]". Annales médico-psychologiques (in French). 1 (2): 181–196. PMID 883741. Retrieved 17 July 2023.
  13. ^ Adams, Cecil (21 February 1986). "Did Dracula really exist?". The Straight Dope. Retrieved 18 July 2023.
  14. ^ Chin, Pat (6 April 1996). "Behind the Rockwood case". Workers World. Retrieved 18 July 2023.
  15. ^ Cobbey, Nan; Currie, Nicola (6 August 1998). "Church challenged to new strides for human rights". The Lambeth Daily. Retrieved 4 May 2023.
  16. ^ Beacock, Michelle (1 July 2012). "Does eating placenta offer postpartum health benefits?". British Journal of Midwifery. 20 (7): 464–469. doi:10.12968/bjom.2012.20.7.464. ISSN 0969-4900. S2CID 73326778.
  17. ^ Conley, Mikaela (26 March 2012). "Mad Mom? January Jones Eats Her Own Placenta". ABC News. Retrieved 18 July 2023.
  18. ^ Biermeier, Sarah. "The Placenta – an Unappreciated Organ". Geneabirth. Archived from the original on 11 January 2012. Retrieved 22 July 2023.
  19. ^ Pratt, J.P.; Roderuck, Charlotte; Coryell, Margaret; Macy, Icie G. (1 November 1946). "Composition of the human placenta: III Vitamin content". American Journal of Obstetrics and Gynecology. 52 (5): 783–787. doi:10.1016/0002-9378(46)90185-8. ISSN 0002-9378. PMID 20273858.
  20. ^ Lim, Robin (2015). Placenta: The Forgotten Chakra (rev. ed.). Bali: Half Angel Press. pp. 122, 128. ISBN 978-0-9762907-7-3. OCLC 951498666.
  21. ^ Hall, Harriet (8 March 2011). "Eating Placentas: Cannibalism, Recycling, or Health Food?". Science-Based Medicine. Retrieved 17 July 2023.
  22. ^ Taber, Stephen Welton; Scott B. Fleenor (2005). Invertebrates of Central Texas Wetlands. Texas Tech University Press. p. 200. ISBN 978-0-89672-550-8.
  23. ^ Mattison, Chris (2007). The New Encyclopedia of Snakes. Princeton, N.J.: Princeton University Press. p. 105. ISBN 978-0-691-13295-2.
  24. ^ "Accidental self biting?". ball-pythons.net. Retrieved 19 September 2024.
  25. ^ Willetts, Mitchell (April 05, 2022). "Texas researcher comes across odd sight". Fort Worth Star-Telegram. {{cite web}}: Check date values in: |date= (help)CS1 maint: url-status (link)
  26. ^ Rohr, Philippus (1679). Dissertatio ... de masticatione mortuorum, respondente Benjamin Frizschius (in Latin). Vogt.
  27. ^ Rohr, Philip. "Of the Chewing Dead". Daily Doofus. Retrieved 22 July 2023.
  28. ^ Luckhurst, Roger (2018). The Cambridge Companion to Dracula. Cambridge (UK): Cambridge University Press. p. 13. ISBN 978-1-107-15317-2.
  29. ^ "BBC Radio 4 – In Our Time: Polidori's The Vampyre". BBC. 7 April 2022. Retrieved 22 July 2023.
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