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What are IgE allergies?

As I’ve discussed previously, food allergies are different from food sensitivities. Food allergies occur when exposure to a food causes your body to create IgE antibodies, which then cause an immediate and often severe reaction to occur at the next exposure.

People with food allergies often experience serious, life-threatening symptoms within minutes to an hour of eating the offending food that may include hives, respiratory distress, and even anaphylactic shock leading quickly to death.

The eight most common IgE food allergies according to the Mayo clinic are:

  • milk
  • eggs
  • peanuts
  • tree nuts (such as almonds, cashew, and walnuts)
  • fish (such as bass, cod, and flounder)
  • shellfish (such as crab, lobster, and shrimp)
  • soy
  • wheat

food allergy for dummies by Dr. Robert WoodEven though IgE testing is the standard food allergy testing procedure, using either a back-scratch test or by examining the blood, it might not tell the whole story. Allergist Dr. Robert Wood, Pediatric Allergist and Professor of Pediatrics at the Johns Hopkins Children’s Center, and author of Food Allergies For Dummies, explains that IgE antibodies may or may not be a reliable indicator of a food allergy, and in fact IgE testing is not entirely accurate as sometimes people will react to a substance and not have any IgE antibodies while other times there will be a large number of IgE antibodies but the person is in fact non-symptomatic to that allergen.

Food sensitivities, on the other hand, are dose-dependent and may be delayed by up to four days after ingestion. They do not create IgE antibodies and can cause symptoms ranging from migraine to fibromyalgia to irritable bowels, ADHD, fatigue, mood swings, digestive issues, and even autoimmune diseases. Food sensitivities will not show up in IgE tests because, again, they do not cause the creation of IgE antibodies in the blood.

If the results from IgE testing leave you still experiencing symptoms, consider getting tested for food sensitivities. The Mediator Release Test (MRT) together with interpretation by a Certified LEAP Therapist (CLT) is the gold standard for food sensitivity testing and successful dietary management to eliminate symptoms.

6 Comments on “What are IgE allergies?

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    1. My son’s school is nut free. Most are these days.One of the techaers in the school is deathly allergic to eggs. So that’s on the list of banned ingredients.A girl in his class has a severe dairy allergy. So dairy is out, too.My son is sensitive to dairy and chocolate, so we limit his exposure to those items.Luckily, I like to get creative in the kitchen and have come up with a whole list of muffins and cookies I can send in for snacktime and class parties, despite these limitations. (The school did send out an approved list of snacks, but most were processed-foods, or didn’t include the dairy allergy.)I chaperoned a class trip today. Every. Single. Kid. had something dairy-based in their lunch. Yes, the literature sent home about the trip only specified nut-free. But every other bit of info from the school this year has mentioned eggs. (The dairy is specific to his class, apparently.) I get that these are stringent limitations. But dude. These are kids’ lives. Make some effort!Rainyday recently posted..

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    1. Obviously they don’t follow the gldeon rule. No one in my family has any kind of allergy, but we go the extra mile to prevent hurting other people (no pears when my nephew visits, no nuts when our 6yo friend visits, no sending certain snacks/treats to school because it might hurt this or that classmate). It is all about thinking of and caring about other people, the way we ourselves would like to be treated. I would feel AWFUL if something I did caused harm to someone else, especially a child; and I would feel almost as awful if a person (again, especially a little kid) was literally the only one who could not enjoy something that everyone else did repeatedly being left out and deprived. Heartbreaking! Makes me even more thankful that we don’t suffer from (food) allergies, and makes me even more determined not to be the jerk that sends in something that could hurt someone’s kid. Someone above here posted that those rude parents were showing ignorance in its purest form but doesn’t ignorance = uninformed? Those folks were quite informed and not ignorant at all; they were just being unkind, selfish assholes.

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