Coprophagia

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A female oriental latrine fly (Chrysomya megacephala) feeds on feces

Coprophagia (/ˌkɒprəˈfiə/ KOP-rə-FAY-jee-ə)[1] or coprophagy (/kəˈprɒfəi/ kə-PROF-ə-jee) is the consumption of feces. The word is derived from the Ancient Greek κόπρος kópros "feces" and φαγεῖν phageîn "to eat". Coprophagy refers to many kinds of feces-eating, including eating feces of other species (heterospecifics), of other individuals (allocoprophagy), or one's own (autocoprophagy) – those once deposited or taken directly from the anus.[2]

In humans, coprophagia has been described since the late 19th century in individuals with mental illnesses and in some sexual acts,[3] such as the practices of anilingus and felching where sex partners insert their tongue into each other's anus and ingest biologically significant amounts of feces.[4] Some animal species eat feces as a normal behavior, in particular lagomorphs, which do so to allow tough plant materials to be digested more thoroughly by passing twice through the digestive tract. Other species may eat feces under certain conditions.

Coprophagia by humans[edit]

In cuisine[edit]

The feces of the rock ptarmigan is used in Urumiit, which is a delicacy in some Inuit cuisine.[5] Several beverages are made using the feces of animals, including but not limited to Kopi luwak, panda tea, insect tea, and Black Ivory Coffee.[6] Casu martzu is a cheese that uses the digestive processes of live maggots to help ferment and break down the cheese's fats.[7]

As a medical treatment for CDI and other conditions[edit]

In Fecal microbiota transplant (FMT), also known as a stool transplant, fecal bacteria and other microbes from a healthy individual are transferred into a patient as an effective treatment for Clostridioides difficile infection (CDI). This treatment has also been used to try to cure other conditions with various results. See: Fecal microbiota transplant.

As a supposed medical treatment[edit]

Ayurveda and Siddha medicine use various animal excreta in various forms. The dung and urine of the Zebu is especially important in the list.[8][9]

Centuries ago (mid 16th century) physicians tasted their patients' feces, to better judge their state and condition, according to François Rabelais, who studied medicine but was also a writer of satirical and grotesque fiction. Further information is needed to confirm the accuracy and context of statement.[10]

Lewin reported, "... consumption of fresh, warm camel feces has been recommended by Bedouins as a remedy for bacterial dysentery; its efficacy (probably attributable to the antibiotic subtilisin from Bacillus subtilis) was anecdotally confirmed by German soldiers in Africa during World War II".[11] However, this story is likely a myth, independent research was not able to verify any of these claims.[12]

As a cult practice[edit]

Members of a religious cult in Thailand routinely ate the feces and dead skin of their leader, whom they considered to be a holy man with healing powers.[13]

As a paraphilia[edit]

Coprophilia is a paraphilia (DSM-5), where the object of sexual interest is feces, and may be associated with coprophagia. Coprophagia is sometimes depicted in pornography, usually under the term "scat" (from scatology).[14] A notorious example of this is the pornographic shock video 2 Girls 1 Cup.[15] The 120 Days of Sodom, a 1785 novel by Marquis de Sade, is full of detailed descriptions of erotic sadomasochistic coprophagia.[16] The film of the same name also contains scenes of coprophilia and coprophagia.

Coprophagia has also been observed in some people with schizophrenia[17] and pica.[18]

Coprophagia by nonhuman animals[edit]

By invertebrates[edit]

Two Adonis blue butterflies feeding on a lump of feces

Coprophagous insects consume and redigest the feces of large animals. These feces contain substantial amounts of semidigested food, particularly in the case of herbivores, owing to the inefficiency of the large animals' digestive systems. Thousands of species of coprophagous insects are known, especially among the orders Diptera and Coleoptera. Examples of such flies are Scathophaga stercoraria and Sepsis cynipsea, dung flies commonly found in Europe around cattle droppings. Among beetles, dung beetles are a diverse lineage, many of which feed on the microorganism-rich liquid component of mammals' dung, and lay their eggs in balls composed mainly of the remaining fibrous material.[19]

Through proctodeal feeding, termites eat one another's feces as a means of obtaining their hindgut protists. Termites and protists have a symbiotic relationship (e.g. with the protozoan that allows the termites to digest the cellulose in their diet). For example, in one group of termites, a three-way symbiotic relationship exists; termites of the family Rhinotermitidae, cellulolytic protists of the genus Pseudotrichonympha in the guts of these termites, and intracellular bacterial symbionts of the protists.[20]

By vertebrates[edit]

Lagomorphs (rabbits, hares, pikas) and some other mammals ferment fiber in their cecums, which is then expelled as cecotropes & eaten from the anus, a process called cecotrophy. Then their food is processed through the gastrointestinal tract a second time, which allows them to absorb more nutrition. While cecotropes are expelled from the anus, they are not feces and thus eating them is not called coprophagia.

Domesticated and wild mammals are sometimes coprophagic.

Some dogs may lack critical digestive enzymes when they are only eating processed dried foods, so they gain these from consuming fecal matter. They only consume fecal matter that is less than two days old which supports this theory.[21]

Cattle in the United States are often fed chicken litter. Concerns have arisen that the practice of feeding chicken litter to cattle could lead to bovine spongiform encephalopathy (mad-cow disease) because of the crushed bone meal in chicken feed. The U.S. Food and Drug Administration regulates this practice by attempting to prevent the introduction of any part of cattle brain or spinal cord into livestock feed. Chickens also eat their own feces. [22][23] Other countries, such as Canada, have banned chicken litter for use as a livestock feed.[24]

The young of elephants, giant pandas, koalas, and hippos eat the feces of their mothers or other animals in the herd, to obtain the bacteria required to properly digest vegetation found in their ecosystems.[25] When such animals are born, their intestines are sterile and do not contain these bacteria. Without doing this, they would be unable to obtain any nutritional value from plants. Piglets with access to maternal feces early in life exhibited better performance.[26]

Hamsters, guinea pigs, chinchillas, hedgehogs, and pigs eat their own droppings, which are thought to be a source of vitamins B and K, produced by gut bacteria.[27] Sometimes, there is also the aspect of self-anointment while these creatures eat their droppings.[28] On rare occasions gorillas have been observed consuming their feces, possibly out of boredom, a desire for warm food, or to reingest seeds contained in the feces.[29]

Coprophagia by plants[edit]

Some carnivorous plants, such as pitcher plants of the genus Nepenthes, obtain nourishment from the feces of commensal animals. Notable examples include Nepenthes jamban, whose specific name is the Indonesian word for toilet.[30][31] Manure is organic matter, mostly animal feces, that is used as organic fertilizer for plants in agriculture.[32]

See also[edit]

References[edit]

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  3. ^ Moore AM (2018). "Coprophagy in nineteenth-century psychiatry". Microbial Ecology in Health and Disease. 29 (1): 1535737. doi:10.1080/16512235.2018.1535737. PMC 6225515. PMID 30425610.
  4. ^ Malbon A (2021-02-12). "What is rimming? How to give a rim job safely". Netdoctor. Archived from the original on 2022-06-21. Retrieved 2022-06-21.
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  7. ^ "Casu Marzu - nice Italian cheese, which is illegal and has thousands of maggots by design - Technology Org". www.technology.org. 2019-11-23. Retrieved 2023-03-18.
  8. ^ Munshi R, Bhalerao S, Rathi P, Kuber VV, Nipanikar SU, Kadbhane KP (2011). "An open-label, prospective clinical study to evaluate the efficacy and safety of TLPL/AY/01/2008 in the management of functional constipation". Journal of Ayurveda and Integrative Medicine. 2 (3): 144–152. doi:10.4103/0975-9476.85554. PMC 3193686. PMID 22022157.
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  18. ^ Rose EA, Porcerelli JH, Neale AV (2000). "Pica: common but commonly missed". The Journal of the American Board of Family Practice. 13 (5): 353–358. PMID 11001006.
  19. ^ Nichols E, Spector S, Louzada J, Larsen T, Amezquita S, Favila ME, et al. (The Scarabaeinae Research Network) (2008). "Ecological functions and ecosystem services provided by Scarabaeine dung beetles". Biological Conservation. 141 (6): 1461–1474. Bibcode:2008BCons.141.1461N. doi:10.1016/j.biocon.2008.04.011.
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  28. ^ Pareek RC (10 July 2020). "Why do HedgeHogs Eat Poop? We Explain!". Small Pet Site. Archived from the original on 2020-08-15. Retrieved 2020-08-14.
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Further reading[edit]

External links[edit]