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PICA Jessica Holttum and Jordan Standlee Present:

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Jessica Holttum and Jordan Standlee Present:. Pica. What Is Pica?. Definition: the persistent craving and compulsive eating of nonfood substances Chalk, ice, metal, soil, sponges, soap, paint Seen especially in children and pregnant women - PowerPoint PPT Presentation

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Page 1: Pica

PICAJessica Holttum and Jordan Standlee Present:

Page 2: Pica

What Is Pica? Definition: the persistent craving and

compulsive eating of nonfood substancesChalk, ice, metal, soil, sponges, soap, paint

Seen especially in children and pregnant women

Seen cross-culturally, though most common in developing countriesAlso areas of low socioeconomic status

Page 3: Pica

What Is Pica?

Image: http://en.wikipedia.org/wiki/File:Glore_Stomach_Display.jpg

Page 4: Pica

What Is Pica? Name comes from genus name of

magpie Very old!

Romans, Greeks, Mesopotamians

Pica pica

Image: http://en.wikipedia.org/wiki/File:Pica_pica.jpg

Page 5: Pica

Significance Fairly common for such an odd disease

10-32% of children 1-6 years old Most-affected groups are at high risk for

health problems Cause unknown, so treatment difficult

Physiological or psychological? Possible evolutionary implications

Page 6: Pica

IS PICA BENEFICIAL TO

ONE’S FITNESS?

Page 7: Pica

NO

Page 8: Pica

Gastrointestinal Consequences Blockages

“Bezoars”Usually caused by eating hair, fibers

Tears and RupturesLeads to internal hemorrhageResult of eating nails, other pointed objects

Page 9: Pica

Illness & Infection Contaminated soil

E. coli, tetanus, anthrax

Also poisoning from pesticides, other chemicals

Unclean objects in mouthCoins, nails, sponges

Image: universityofcalifornia.edu

Page 10: Pica

Poisoning Lead poisoning

commonEspecially in

children who ingest paint chips

Prominent in low-income areas

Potassium toxicityCaused by ingesting

burnt matches

Image: findmeacure.com

Page 11: Pica

IS PICA BENEFICIAL TO

ONE’S FITNESS?

Page 12: Pica

YES

Page 13: Pica

Inducible in Animals Experiment 1: rats given chemotherapy,

variable access to clayThose who ate clay were less physically

affected

Page 14: Pica

Inducible in Animals

Image: “Pica as an adaptive response…” – De Jonghe et al.

Page 15: Pica

Inducible in Animals

Image: “Pica as an adaptive response…” – De Jonghe et al.

Page 16: Pica

Inducible in Animals Experiment 2: some rats given motion

sickness, all received clay access“Sick” rats ate more clay, less food

Page 17: Pica

Inducible in Animals

Image:"Motion sickness induced pica in the rat” –Mitchell et al.

Page 18: Pica

Detoxifying Effects Native American

acorn breadClay absorbs toxic

tannins

Study of inner-city mothersPica = lower levels of

illicit drugs

Image: mrssurvival.com

Page 19: Pica

Detoxifying Effects

Image: “Pica in an Urban Environment” –Edwards et al.

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Underlying Conditions Anemia

Iron deficiencyCorrelated with pica

○ Especially metal or ice cravingsCan be symptomatic of liver/kidney failureIron replacement therapy often stops pica

Other mineral deficienciesZinc

Page 21: Pica

Underlying Conditions

Page 22: Pica

IS PICA BENEFICIAL TO

ONE’S FITNESS?

Page 23: Pica

Conclusion In the past…

Yes○ Good way to self-treat nutrient deficiencies,

combat toxins In the present…

Somewhat○ Can easily be replaced by supplements○ Valuable as indicator of dietary issues○ Can cause problems, must be able to stop

Page 24: Pica

References http://medical-dictionary.thefreedictionary.com/pica De Jonghe, Brian C., Maureen P. Lawler, Charles C. Horn, and Michael G. Tordoff. "Pica as an

adaptive response: Kaolin consumption helps rats recover from chemotherapy-induced illness." Physiology & Behavior 97.1 (2009): n. pag. Web. 21 Apr 2011.

Parry-Jones, B, and WL Parry-Jones. "Pica: symptom or eating disorder? A historical assessment."British Journal of Psychiatry 160. (1992): 341-354. Web. 21 Apr 2011.

Rose, E. A., J. H. Porcerelli, and A. V. Neale. "Pica: Common but commonly missed." Journal of the American Board of Family Practice 13.5 (2000): 353-358. Web. 21 Apr 2011.

Singhi, Sunit, R. Ravishanker, Pratibha Singhi, and R. Nath. "Low plasma zinc and iron in pica." Indian Journal of Pediatrics 70.2 (2003): 139-143. Web. 21 Apr 2011.

Johns, Timothy, and Martin Duquette. "Detoxification and mineral supplementation as functions of geophagy." American Journal of Clinical Nutrition53.2 (1991): 448-56. Web. 21 Apr 2011.

Mitchell, Denis, J.D. Laycock, and William F. Stephens. "Motion sickness induced pica in the rat." American Journal of Clinical Nutrition 30. (1977): 147-50. Web. 21 Apr 2011.

Adler, Amanda I., and Adam Olscamp. " Toxic 'Sock' Syndrome Bezoar Formation and Pancreatitis Associated With Iron Deficiency and Pica." Western Journal of Medicine 163.5 (1995): 480-82. Web. 21 Apr 2011.

http://www.nlm.nih.gov/medlineplus/ency/article/001538.htm http://en.wikipedia.org/wiki/Pica_(disorder) http://emedicine.medscape.com/article/914765-overview

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References Johnson, Bruce E. Clinical Methods: The History, Physical, and Laboratory Examinations. 3rd ed. Boston:

Butterworths, 1990. Chapter 148. eBook. Barton, James C., J. Clayborn Barton, and Luigi F. Bertoli. "Pica associated with iron deficiency or depletion: clinical

and laboratory correlates in 262 non-pregnant adult outpatients." BMC Blood Disorders 10.9 (2010): n. pag. Web. 21 Apr 2011.

Kahn, Yasir, and Glenn Tisman. "Pica in iron deficiency: a case series." Journal of Medical Case Reports 4. (2010): n. pag. Web. 21 Apr 2011.

Kawai, Kosuke, Elmar Saathoff, Gretchen Antelman, Gernard Masmanga, and Wafaie W. Fawzi. "Geophagy (Soil-eating) in Relation to Anemia and Helminth Infection among HIV–Infected Pregnant Women in Tanzania." American Journal of Tropical Medicine and Hygiene 80.1 (2009): 36-43. Web. 21 Apr 2011.

Young, Sera L., M. Jeffrey Wilson, Dennis Miller, and Stephen Hillier. "Toward a Comprehensive Approach to the Collection and Analysis of Pica Substances, with Emphasis on Geophagic Materials." PLoS one 3.9 (2008): n. pag. Web. 21 Apr 2011.

Lynch, Kristin A., Peter G. Feola, and Elisabeth Guenther. "Gastric Trichobezoar: An Important Cause of Abdominal Pain Presenting to the Pediatric Emergency Department." Pediatric Emergency Care 19.5 (2003): 343-47. Web. 21 Apr 2011.

Hackworth, Samuel R., and Laura L. Williams. "Pica for Foam Rubber in Patients With Sickle Cell Disease: Case Reports." Southern Medical Journal96.1 (2003): n. pag. Web. 21 Apr 2011.

Kinnell, H. G. "Pica as a feature of autism."British Journal of Psychiatry 147.1 (1985): 80-82. Web. 21 Apr 2011. Edwards, Cecile H., Allan A. Johnson, Enid M. Knight, Ura Jean Oyemade, O. Jackson Cole, et al. "Pica in an Urban

Environment." Journal of Nutrition 124. (1994): 954S-962S. Web. 21 Apr 2011. Von Garnier, Cristophe, Holger Stunitz, Michael Decker, Edouard Battegay, and Andreas Zeller. "Pica and refractory

iron deficiency anaemia: a case report." Journal of Medical Case Reports 2.234 (2008): n. pag. Web. 21 Apr 2011. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1951586/pdf/pubhealthreporig00017-0091.pdf http://www.dhpe.org/infect/Anthrax.html http://www.ehow.com/about_6729187_harmful-bacteria-soil.html