The terms food allergies, sensitivities, and intolerances are often confused and used interchangeably, although they are unique physiological conditions. A true food allergy causes an immune system reaction that affects numerous organs in the body. It can cause a range of symptoms, and, in some cases, an allergic food reaction can be severe or life-threatening. In contrast, symptoms of food intolerances or sensitivities are generally less serious, but often more difficult to detect or diagnose.
request an appointmentUnderstanding the Difference: Allergy, Sensitivity, and Intolerance
Many people experience uncomfortable symptoms after eating certain foods — but the underlying cause isn’t always the same.
- Food Allergy
A true food allergy involves the immune system producing an immediate and potentially severe reaction to a food protein. Even small amounts can trigger symptoms like hives, swelling, difficulty breathing, or anaphylaxis. These reactions are typically mediated by IgE antibodies and require strict avoidance of the allergen. - Food Sensitivity
Food sensitivities are immune-mediated but usually involve a delayed reaction — hours or even days after eating a trigger food. This makes them harder to identify. Symptoms may include bloating, fatigue, headaches, brain fog, joint pain, and skin issues. They are often linked to IgG and other immune pathways. - Food Intolerance
Food intolerances are not immune-related. They happen when the body has difficulty digesting a certain food component (such as lactose in dairy) due to enzyme deficiencies, chemical sensitivities, or other non-immune mechanisms. Symptoms are generally limited to digestive discomfort.
Why Food Sensitivity Testing Matters
Delayed immune reactions can contribute to chronic inflammation and a wide range of symptoms. Because these reactions can occur long after eating the trigger food, they’re often overlooked in standard allergy testing.
Identifying and addressing food sensitivities can:
- Reduce systemic inflammation
- Improve digestive function
- Boost energy and mental clarity
- Support skin, joint, and immune health
How We Test at Glendale Whole Health
At Glendale Whole Health, we use advanced laboratory testing to assess immune responses to a broad panel of foods. This helps pinpoint the specific foods that may be contributing to your symptoms.
Testing is simple:
- A small blood sample is collected in-office.
- The lab analyzes immune reactivity to a wide range of foods.
- Results are reviewed with you in detail, and a customized elimination and reintroduction plan is created.
What to Expect After Testing
Your personalized plan may include:
- Short-term elimination of trigger foods
- Gradual reintroduction to monitor tolerance
- Gut-healing protocols to reduce future sensitivities
- Nutritional support to ensure a balanced diet
Evaluating Your Needs
While basic dietary adjustments can help, a personalized plan based on accurate testing ensures you’re addressing the root cause of your symptoms. We recommend that individuals be evaluated for other potential contributors such as gut health, hormones, and nutrient status.
A thorough assessment ensures that you’re not only reducing your current symptoms but also supporting long-term wellness.
Schedule Your Consultation
If you suspect that certain foods are impacting your health, contact Glendale Whole Health at (818) 551-0464 or request an appointment online. Our team is here to help you uncover your triggers and restore optimal health.