Geofagi
Geofagi är handlingen att äta jord eller jordliknande substanser som lera och kalk. Det förekommer hos vilda djur, där det kan vara ett naturligt eller sjukligt beteende, men även hos människor, där det är vanligast i bonde- eller förindustriella samhällen hos barn och gravida kvinnor.[1] Mänsklig geofagi kan bero på pica, en ätstörning som i Diagnostic and Statistical Manual of Mental Disorders (DSM) karaktäriseras av abnorma begär för icke-näringshaltiga ting.[2][3]
Geofagi är utbrett i djurriket. Den grekiska filosofen och läkaren Galenos var den första som beskrev hur sjuka djur åt lera under 100-talet. Denna typ av geofagi har dokumenterats hos en mängd olika arter av däggdjur, fåglar, reptiler, fjärilar och gråsuggor, speciellt bland gräsätare.[4]
Noter
- ^ Abrahams PW (2003). ”Human Geophagy: A Review of Its Distribution, Causes, and Implications”. Geology And Health: Closing The Gap. Oxford University Press US. ISBN 0-19-516204-8.
- ^ Handbook of Evidence-Based Practice in Clinical Psychology, Child and Adolescent Disorders. 2012. sid. 304. https://books.google.com/books?id=Gg8EjCzk1IQC&pg=PA304&dq=pica+hyalophagia&hl=en&sa=X&ei=auncVO75EoKhyATiuIDYDQ&ved=0CC0Q6AEwAw#v=onepage&q=pica%20hyalophagia&f=false. ”abnormal cravings for non-nutritive items”
- ^ Coleman AM (2015). A Dictionary of Psychology. Oxford University Press. Sid. 576. https://books.google.com/books?id=zvlrBgAAQBAJ&pg=PA576&dq=pica+hyalophagia&hl=en&sa=X&ei=auncVO75EoKhyATiuIDYDQ&ved=0CCIQ6AEwAQ#v=onepage&q=pica%20hyalophagia&f=false.
- ^ Diamond JM (1999). ”Evolutionary biology. Dirty eating for healthy living”. Nature 400: sid. 120–1. doi: . PMID 10408435. http://cogweb.ucla.edu/Abstracts/Diamond_99.html.
Media som används på denna webbplats
Författare/Upphovsman: Brian Ralphs, Licens: CC BY 2.0
Blue-and-yellow Macaws, Scarlet Macaws, Chestnut-fronted Macaws, Mealy Amazons, Blue-headed Parrots and a single Orange-cheeked Parrot at a clay lick at Tambopata National Reserve, Peru.
Författare/Upphovsman: SuSanA Secretariat, Licens: CC BY 2.0
The practice of eating soil (called pica or geophagy*) is not uncommon amongst children and pregnant women. The women do it on purpose. Obviously if you're going to eat soil you're going to eat whatever ova are in the soil and makes ascariasis a high probability.
The soil particles show up as white on this plain Xray which is done with a "Barium meal": An X-ray technique where the patient swallows a metallic-based fluid (Barium is the metal) which shows up as white on an X-ray film. The radiologist can watch what happens as this fluid is swallowed and as it goes on down through the stomach and small intestine.
Photo by Larry Hadley, South Africa <a href="http://paedsurg.ukzn.ac.za/Staff/ProfLarryHadley.aspx" rel="nofollow">paedsurg.ukzn.ac.za/Staff/ProfLarryHadley.aspx</a>
- See also here: <a href="http://forum.susana.org/forum/categories/26-health-issues-and-connections-with-sanitation/8092-geophagy-the-cultural-practices-of-eating-soil-common-in-many-sub-saharan-countries" rel="nofollow">forum.susana.org/forum/categories/26-health-issues-and-co...</a>