- Soy allergy
Soy allergy is a type of
food allergy. "Soy allergy" (U.S.) or "Soya allergy" (UK) is one of the most common food allergies. [ [http://www.nexusmagazine.com/articles/Soy%20Allergens.html "Nexus Magazine"] August-September, 2004; The Hidden Dangers of Soy Allergens by Kaayla T. Daniel, PhD, CCN, retrieved September 7, 2006] It is a hypersensitivity to dietary substances from soycausing an overreaction of the immune system which may lead to severe physical symptoms for millions of people [ National Institutes of Health, NIAID Allergy Statistics 2005 http://www.niaid.nih.gov/factsheets/allergystat.htm] . The Asthma and Allergy Foundation of Americaestimates soy is among the nine most common food allergens for pediatric and adult food allergy patients [ “Allergy Facts and Figures,” Asthma and Allergy Foundation of America http://www.aafa.org/display.cfm?id=9&sub=20&cont=518] . It is usually treated with an exclusion diet and vigilant avoidance of foods that may be contaminated with soy ingredients. The most severe food allergy reaction is called anaphylaxis[ National Report of the Expert Panel on Food Allergy Research, NIH-NIAID 2003 http://www3.niaid.nih.gov/about/organization/dait/PDF/june30_2003.pdf] and is a medical emergencyrequiring immediate attention and treatment with Epinephrine.
Those allergic to
soy proteinshould always read food ingredient labels carefully and avoid any foods containing soybean, including the substances listed below. Caution should be exercised when dining at Asian restaurants or when using Asian sauces, which may contain soy.
Reactions and Treatment
Some people who are allergic to soy protein may have an extreme allergic reaction and go into
anaphylactic shock(anaphylaxis). In cases of anaphylaxis, emergency medical personnel typically administer epinephrine(available as an autoinjector, such as EpiPen) and an antihistaminesuch as Benadryl ( diphenhydramine). In event of an allergic reaction, the victim should see a physician or immediately go to the emergency room, as anaphylaxis can be fatal if not treated immediately.
Soy allergy can also manifest itself as
urticaria, rash, redness ( inflammationdue to immune system response) and severe itchingof the skin. These symptoms can happen immediately, but may also manifest a day (or even days) after consuming soy protein. [ [http://www.nexusmagazine.com/articles/Soy%20Allergens.html "Nexus Magazine"] August-September, 2004; The Hidden Dangers of Soy Allergens by Kaayla T. Daniel, PhD, CCN, retrieved September 7, 2006]
Food sources of soy protein
fast-food restaurants commonly use soy protein in hamburger buns (soy flour) hamburger meat (soy protein) and hydrolyzed vegetable protein(HVP) in sauces. On their respective web sites, McDonald's, Burger King and Wendy's list soy flour as an ingredient in their hamburger buns. [ [http://www.mcdonalds.com/app_controller.nutrition.categories.ingredients.index.html "McDonald's Nutrition Information and Ingredients"] , August 26, 2006, retrieved September 7, 2006] [ [http://www.bk.com/Nutrition/PDFs/ingredients.pdf "McDonald's USA"] (11 page PDF file) "Burger King Nutrition and Ingredients" "Burger King Brands Inc. USA", August, 2006, retrieved September 7, 2006] [ [http://wendys.com/food/pdf/us/nutrition.pdf "Wendy's USA"] (6 page PDF file) "Wendy's Nutrition Facts", July 1, 2006, retrieved September 7, 2006] U.S. Nutrition Information Multi-grain breads, doughnuts, doughnut mix and pancake mix commonly contain soy flour. Canned tuna may contain vegetable broth which contains soy protein.
Some products [for reasons having to do with national regulation of soy products] don't list soy protein or soy flour on their ingredients labels, yet they still contain soy. There are still many latent issues resolving how soy should be regulated.
Products containing soy protein include:
soy(soy albumin, soy fiber, soy flour, soy grits, soy milk, soy nuts, soy sprouts)
*soybean (curd, granules)
*soy protein (concentrate, isolate)
soy sauce, tamari
textured vegetable protein(TVP)
The following food additives may contain soy protein:
hydrolyzed vegetable protein(HVP)
*flavoring (including natural and artificial)
*canned chicken broth
*vegetable broth, gum, and starch
*bouillon cubes (beef, chicken, vegetable, etc.)
Many people with soy allergy can tolerate small to moderate amounts of soy protein: the typical dose needed to induce an allergic response is about 100 times higher than for many other food allergins, with 90% of sufferers being able to tolerate doses up to 400mg. [cite journal | author = Christopher T. Cordle | title = Soy Protein Allergy: Incidence and Relative Severity | journal = Journal of Nutrition | volume = 134 | pages = 1213S–1219S | year = 2004 | url = http://jn.nutrition.org/cgi/content/full/134/5/1213S] As a result, not all of those allergic to soy need to avoid very minor sources of soy protein such as soy oil or soy lecithin.
* [http://www.aafa.org/display.cfm?id=9&sub=20&cont=522 Soy Allergy] information page.
Asthma and Allergy Foundation of America
* [http://www.hc-sc.gc.ca/fn-an/securit/allerg/allergen_soy-soja_e.html Soy - One of the nine most common food allergens] Health Canada
* [http://www.allergyfiles.com/soy-allergy-common-food-uncommon-allergy-35/ Soy Allergy] Food Allergy Guide
* [http://www.hiddensoy.com Soy Protein Dangers] Information on the hidden dangers of soy.
* [http://www.soyconnection.com/newsletters/soy-connection/health-nutrition/article.php/Estimating+Prevalence+Of+Soy+Protein+Allergy?id=39 Soy Protein Allergies] Information on soy allergies.
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