Food Allergies vs. Sensitivities
Understanding the Difference & When to Test 

With the surge in gluten-free and dairy-free products, it's easy to wonder if you have food allergies or sensitivities. Should you be avoiding certain foods too? It's a confusing topic, but we're here to help you understand the difference and whether food sensitivity testing might benefit you.

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Understanding Immune Responses

To understand our Immune Response, it is helpful to understand a little about our IgA, IgE, and IgG immune responses.  IgA, IgE and IgG refer to immunoglobulins, or antibodies.  These antibodies are part of our immune system, and are produced in response to things we come in contact with on a daily basis.  Our bodies make antibodies to foreign substances like bacteria and viral cells, but can also respond to foods, dust, dander, and pollen.  Antibodies help the body mount an immune system response (‘fight’) against foreign invaders.

• IgE Reactions (True Food Allergies): These cause immediate reactions like hives, swelling, difficulty breathing – think anaphylaxis. These are serious and require strict avoidance of trigger foods.

• IgA and IgG Reactions (Food Sensitivities): These are delayed reactions, sometimes taking hours or days to show up. Symptoms include headaches, fatigue, digestive issues, or skin problems.

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Testing for Allergies and Sensitivities

• Allergies (IgE): We use skin prick tests and blood tests to diagnose true allergies. These results are reliable and indicate which foods must be completely avoided.

• Sensitivities (IgA, IgG): While you can test IgG and IgA, this is not diagnostic of hypersensitivity or allergy; but rather sensitivity and intolerance, as well as inflammation.

  • While blood testing is available for food sensitivity reactions, these tests are controversial as the results are commonly not reproducible and are not as reliable as elimination diets for uncovering food sensitivity.

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Celiac Disease vs. Gluten Sensitivity

• Celiac Disease: This is an autoimmune reaction to gluten, damaging the small intestine. It requires strict gluten avoidance and is diagnosed with specific blood tests and can be confirmed with biopsy.

• Gluten Sensitivity: This may show up on IgA or IgG testing. It's not as severe as celiac disease, but can still cause symptoms.

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When to Consider Food Sensitivity Testing

• You want data & recommendations: Testing can provide concrete information to guide dietary changes.

• Elimination diets are challenging: They can be time-consuming, difficult with picky eaters, or impractical for busy lifestyles.

• You've tried other approaches without success: Testing may uncover hidden triggers contributing to your symptoms.

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Remember:

• Food sensitivity testing isn't 100% reliable, but it can be a helpful tool.

• If you're concerned about food allergies or sensitivities, schedule a consult with us. We'll help you navigate the complexities and find the best approach for you.

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Ready to take the next step? Schedule an appointment today!

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We're here to support you on your journey to optimal health.