Food sensitivity & intolerance testing
What is food sensitivity & Intolerance?
Worldwide, food sensitivities are on the upswing, and medical experts are starting to notice. Food sensitivity tests are getting increasingly popular, especially those you can do at home. As not all at-home food sensitivity tests are created equal, it is beneficial to know some alternatives to learn about any food sensitivities you might have.
People have begun to acknowledge how certain foods may make them feel lethargic, cause digestive problems, or even skin problems such as eczema. If you feel as if you can have a food sensitivity, then finding out sooner rather than later can help avoid misery and wasted money.
What is food sensitivity vs. food allergy? Many individuals don't realize that food level sensitivities can impact our health and state of mind. What's more, food levels of sensitivities are mainly undiagnosed. While they may be less frightening than a food allergy, these mysterious and highly individualistic food levels of sensitivities can still make us experience unpleasant and unwanted signs.
An actual food allergic reaction causes a body immune system response that impacts numerous organs in the body. It can cause a range of signs. Sometimes, an allergic food reaction can be severe or deadly. On the other hand, food intolerance signs are usually less severe and often minimal to gastrointestinal problems.
In the case of food intolerance, you may have the ability to eat small amounts of the offending food without trouble. You might also be able to prevent a response by taking alternative foods or taking supplements to aid digestion.
What's food allergy testing?
A food allergy is a condition that causes your immune system to take care of an ordinarily harmless kind of food like was a harmful virus, bacteria, or another infectious agent. The immune system reaction to a food allergy ranges from moderate rashes into abdominal pain into a life-threatening syndrome known as anaphylactic shock.
Food allergies are more common in children than adults, affecting about 5% of children in America. Many children outgrow their allergies as they get older. These foods cause nearly 90 percent of all food allergies:
Tree nuts (such as almonds, walnuts, and cashews)
For some folks, even the smallest amount of allergy-causing food may cause life-threatening symptoms. Of the foods listed above, peanuts, tree nuts, shellfish, and fish generally cause the most severe allergic reactions.
Food allergy testing can figure out whether you or your child has a food allergy. If a food allergy is suspected, your primary care provider or your child's provider will most likely refer you to an allergist. An allergist is a physician who specializes in diagnosing and treating allergies and asthma.
What's it used for?
Food allergy testing is used to learn if you or your child has an allergy to a particular food. It could also be used to understand whether you've got an actual allergy or, rather, food sensitivity.
Food sensitivity, also referred to as food poisoning, is frequently confused with a food allergy. Both states may have similar symptoms, but complications can be quite different.
A food allergy is an immune system response that can affect organs throughout the body. It can lead to dangerous health conditions. Food sensitivity is usually not as profound. In case you've got a food sensitivity, your body can not properly digest a specific food, or a food disrupts your digestive tract. Indicators of food sensitivity are restricted mainly to digestive problems like abdominal pain, nausea, gasoline, and nausea.
Frequent food sensitivities include:
- Lactose, a kind of sugar found in milk products. It might be confused with a milk allergy.
MSG, an additive found in many foods
- Gluten, a protein found in wheat, barley, and other grains. It's sometimes confused with a wheat allergy. Gluten sensitivity and wheat allergies are also distinct from celiac disease. In celiac disease, your immune system hurts your gut when you eat gluten-free. Some digestive symptoms may be similar, but celiac disease isn't a food sensitivity or a food allergy. Your child may require food allergy testing if you have certain risk factors and/or symptoms.
Risk factors for food allergies include having:
- A family history of food allergies
- Other food allergies
- Other allergies, such as hay fever or eczema
Symptoms of food allergies usually affect one or more of the following parts of the body:
- Skin. Skin symptoms include hives, tingling, itching, and redness. In infants with allergies, the first symptom is often a rash.
- Digestive system. Symptoms include abdominal pain, metallic taste in the mouth, and itching or swelling of the tongue.
- Respiratory system
Symptoms include coughing, wheezing, nasal congestion, difficulty breathing, and tightness in the chest.
Anaphylactic shock is a severe allergic reaction that affects the whole body. Symptoms may include those listed above, as well as:
Tightening of the airways and trouble breathing
Rapid swelling of the tongue, lips, and/or throat
Symptoms can occur just seconds after someone is exposed to the toxic substance. Without rapid medical treatment, anaphylactic shock can be fatal. If anaphylactic shock is suspected, you should call 911 immediately.
Food allergy testing
What happens during food allergy testing? The testing may start with your allergist performing a physical examination and asking about your symptoms. After that, he or she will execute one or more of these tests:
Skin prick test. In this test, your allergist or another provider will put a small quantity of the suspected food on the skin of your forearm or back. They will then prick the skin using a needle to allow a minimal amount of the food to get under the skin. If you receive a red, itchy bump at the injection site, it usually means you're allergic to the food.
Blood evaluation. This test checks for substances called IgE antibodies from the blood. IgE antibodies are produced in the immune system when you're subjected to an allergy-causing sense. A medical care professional will take a blood sample from a vein in your arm with a small needle during a blood test. After the needle is inserted, a little bit of blood will be collected into a test tube or vial. You might feel a slight sting when the hand moves in or out. This typically takes less than five minutes.
Oral challenge evaluation. In this test, your allergist will provide you or your child small amounts of the food suspected of causing the allergy. The food could be given in a capsule or using an injection. You're going to be closely watched to see whether there is an allergic response. Your allergist will provide immediate treatment if there's a reaction.
Elimination diet. This is used to discover which particular foods or food is causing the allergy. You'll begin by eliminating all suspected foods from your child's or your daily diet. Then you'll add back the foods to the diet one at a time, searching for an allergic response. An elimination diet can not show whether your answer is because of a food allergy or a food sensitivity. An elimination diet isn't recommended for anybody at risk for a severe allergic response.
Food sesnsitivity vs. food allergies tests
Recently, the appeal of food level of sensitivity blood tests has grown. There are a variety of blood tests that claim to check for food sensitivities. Comparable to allergy testing, these tests usually try to find immunoglobulin antibodies.
When it comes to food allergic reactions, skin pricks and blood tests that measure a protein called immunoglobulin E, or IgE, are utilized to detect them. The existence of IgE antibodies typically indicates a body immune system reaction.
Food level sensitivity tests typically search for the presence of IgG (not IgE). IgG antibodies have not been shown to reliably recognize either food allergic reactions or level of sensitivities. Many people produce IgG antibodies after eating food. They are not specific to a person's level of sensitivity, although previous or regular exposure to food might trigger these levels to be higher.
Risks in taking the tests: An oral challenge test can cause a severe allergic response. That is why this test is only given under close supervision by an allergist. You might find an allergic reaction through an elimination diet. You should speak with your allergist about how to handle potential reactions.
A skin prick test can irritate the skin. If your skin is itchy or irritated after the exam, your allergist can prescribe medication to relieve the symptoms. In rare instances, a skin test can cause a severe reaction. So this test also has to be performed under close supervision by an allergist.
There's minimal risk to getting a blood test. You might have minor bruising or pain at the place where the needle was put in, but most symptoms go away quickly.
Food sensitivities & allergy test results
What do the results say? If the results demonstrate that you or your child has a food allergy, the remedy is to prevent the food. There's no cure for food allergies, but removing the food from your diet should avoid allergic reactions. Preventing allergy-causing foods may involve carefully reading labels on packaged products. Additionally, it means you want to spell out the allergy to anyone who prepares or serves food for you or your child, including people like waiters, babysitters, teachers, and cafeteria workers. But even if you're careful, you or your child might be exposed to the food by accident.
In the case of food intolerance, you may eat very small amounts of the offending food without trouble or find good replacements. You might be able to find several options to prevent a response.
1. Mayo Clinic Staff. (2014). mayoclinic.org/diseases-conditions/milk-allergy/basics/definition/con-20032147
2. Food allergy. American Academy of Allergy, Asthma, and Immunology. https://www.aaaai.org/conditions-and-treatments/library/at-a-glance/food-allergy.
3. What is celiac disease? Celiac Support Association. https://www.csaceliacs.org/celiac_disease_defined.jsp.
4. Burks W. Clinical manifestations of food allergy: An overview. http://www.uptodate.com/home.
5. Luyt D, et al. Diagnosis and management of food allergy in children. Pediatrics and Child Health. 2016;26:7.
6. Boyce JA, et al. Guidelines for the diagnosis and management of food allergy in the United States: Report of the NIAID-sponsored expert panel. Bethesda, Md.: National Institute of Allergy and Infectious Diseases. http://www.niaid.nih.gov/topics/foodallergy/clinical/Pages/default.aspx.
7. Food allergy. American College of Allergy, Asthma, and Immunology. http://acaai.org/allergies/types/food-allergies.
8. Feldweg AM. Exercise-induced anaphylaxis: Clinical manifestations, epidemiology, pathogenesis, and diagnosis. http://www.uptodate.com/home.
9. Barnard ND. (2011). Soy takes the heat. vegetariantimes.com/health-and-nutrition/soy-facts-and-fiction
10. Breastfeeding essentials. (n.d.). hhma.org/healthadvisor/pa-breastfe-hhg/
11. Food allergies and food intolerances: Both are on the rise—and it's important to know the difference. (2011). health.harvard.edu/allergies/food-allergies-and-food-intolerances