Food Allergies & Intolerances

Adverse Food Reactions, Membership, Q&As

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Types of Adverse Food Reactions

This section will break down the types of food reactions we can have with IBD and which ones you can improve over time. Below this reviews food sensitivity testing and why you can save your money to avoid a print out of your most commonly consumed foods.

  1. Immune Mediated

    1. IgE Mediated-
      • Typically the response is immediate and can be severe
      • Exposure to the food may increase severity of response
      • ex. Food Allergies, Oral allergy syndrome, Acute urticaria
    2. Mixed IgE and non-IgE-
      • ex. Atopic dermatitis 
    3. Non-IgE Mediated-
      • ex. Celiac disease, Food protein induced entercepathy
    4. Cell Mediated-
      • ex. Allergic contact dermatitis
  2. Non-Immune Mediated – Food intolerances

    1. Metabolic-
      • ex. Lactose intolerance and Fructose Malabsorption
    2. Pharmacologic-
      • ex. Caffeine
    3. Environmental Toxins
    4. Additive Responses-
      • sulfites, nitrates, polysorbate 80
    5. Long term inflammatory dietary pattern 

Immune mediated reactions can be improved by working on the underlying factors:

  • Nutrient deficiencies (vitamin D, vitamin A, zinc, etc)
  • Increased intestinal permeability
  • Stress
  • Sleep
  • Sufficient but not excessive exercise
  • Developing tolerance to a food through introducing small quantities

Non-immune mediated reactions can be improved by working on the underlying factors:

  • Microbiome supportive diet patterns
  • Increased intestinal permeability
  • Poor motility
  • Restrictive eating
    • Criteria: eating the same meals daily, noticeable decrease from normal intake and frequent fear with food
  • Reduced eating in stressed state
  • Enzyme supplementation if lacking enzymes
  • Anxiety/Fear of food

You don’t need to test for food sensitivities

  • The term “Food Sensitivities” is not clearly defined in research
  • The research is newer in this area and the thought is that symptoms can occur 1-3 days after exposure to an offending food
  • Research on food sensitivity tests indicates that it’s a test indicating exposure, not intolerance to a food, making it not valid
    • Testing to Avoid:
      • Mediator Release Tests: Using white blood cells & “mediators”: Early research to show that high levels of white blood cell accumulation may indicate sensitivity. Research doesn’t yet support this as a valid way to test or treat sensitivities.
      • ALCAT Tests: IgG Antibody Tests, IgG Antibodies are protein that attaches to an antigen (food) to alert the immune system to cause inflammation which is a normal occurrence that occurs day to day. Research doesn’t support this as a valid way to test or treat sensitivities
      • Everlywell, Hair Tests etc: Not valid tests to identify anything