Allergies & Sensitivities - Food

According to Food Allergy Research & Education, 200,000 people in the United States require emergency medical treatment for allergies to food each year, with about 32 million people having identified food allergies. 

Food allergies are IgE immune system-mediated, causing histamines and chemicals to be released, resulting in an allergic reaction which can sometimes be fatal. Symptoms experienced include swelling and itching skin, digestive symptoms, and anaphylaxis. Some of the most common allergy-causing foods include: milk, eggs, peanuts, tree nuts, soy, wheat, fish and shellfish. 

Food sensitivities are triggered by the digestive system and often mediated by IgG, leading to bloating, gas, diarrhea, constipation, cramping, and nausea. Additional  symptoms similar to a mild allergic reaction may also occur such as confusion, fatigue, itching, joint/muscle pain, headaches, sneezing, and nasal congestion.

Some causes of food sensitivities include:

• Not having the right enzymes for digesting certain foods
• Reacting to food preservatives or additives
• Reacting  to chemicals or caffeine
• Reacting to the sugars produced in certain foods
• Imbalance of gastrointestinal bacteria

Food allergies and sensitivities tests help identify harmful triggers, support treatment plans and diet changes. 

What do food allergies tests measure?

Food allergies and sensitivities tests include skin prick testing for a reaction to specific foods, and blood testing for the presence of the immunoglobulin E and G in response to certain foods.

A variety of comprehensive test panels are available through Rupa Health which assess reactivity to numerous food products. Some of food related allergy and sensitivity tests include:

• Mosaic Diagnostics' IgG Food MAP with Candida + Yeast: 190 foods common in the Western, Asian, and Mediterranean diet, and candida and yeast are tested for food sensitivity using a blood sample.
• Precision Point's P88 Dietary Antigen Test: A blood sample is assessed for IgE, IgG, IgG4 and C3d reactions to 88 of the most common foods to help identify food allergies and sensitivities for patients with chronic illnesses.
• Diagnostic Solutions' IgG Food Explorer: Evaluates over 250 food antigens measuring IgG antibodies and is beneficial in monitoring diet and lifestyle changes. 

Determining food allergies and sensitivities includes a physical examination, a medical history of symptoms with a food diary, screening for gut issues, and assessing for nutrient deficiencies, in combination with the food allergy tests.