The 7 worst Oat Intolerance Symptoms - Test Your Intolerance (2024)

Oats are an excellent snack and bring several nutritional benefits. But if you feel unwell and have itchy skin or stomach problems after consuming a bowl of oats, you might be experiencing Oat Intolerance Symptoms. Oat intolerance is often a trigger to your immunity system.

Depending on the level of sensitivity, your body can experience mild to severe symptoms when coming in contact with oats or consuming oats. Oat Intolerance Symptoms are different from wheat intolerance ones as the constituent of wheat that triggers the immune response is gluten, whereas, in oats, it is the protein avenin.

More than 20% of people worldwide have some kind of food allergy or intolerance [1]. This forms a sizable chunk of the population, and as some allergy flare-ups are more aggressive than the others, you need to know which ones relate to what allergy to manage your sensitivities well.

Sometimes what you might term as oat intolerance could be a reaction to gluten. Even though oats don’t contain gluten, they are usually manufactured alongside other grains with gluten (like rye), and your intolerance could be the result of cross-contamination. Cross-contamination like this often results in misdiagnosis. To know the difference, you can read more on symptoms of gluten intolerance.

What Is Oat Intolerance?

Oats have a protein called avenin that is excellent for manufacturing new cells and muscular build-up, but certain individuals can either develop or have a hereditary sensitivity towards avenin.

Oat intolerance triggers your body’s immune system releasing antibodies to fight off avenin, which the body now views as a threat. Like other food items, oat intolerance leads to the production of Immunoglobulin G or IgG antibodies in the body. Severe allergies trigger the release of Immunoglobulin E or IgE antibodies that exhibit a much more violent response [2].

Oat intolerance can trigger several reactions, from itchy skin to watery eyes. While some symptoms might be more violent than others, knowing and managing your condition is the best option. If you experience severe symptoms like anaphylactic shock, you will need immediate help from your doctor. Anaphylactic shock occurs on rare occasions, and it’s usually a sign of a severe allergic reaction rather than intolerance. It occurs approximately one hour after consumption.

If you’re intolerant to oats or you think you might have an allergy to them, you should always check labels on products for avenin, oats, and oat powder.

It is dire to know when you or someone else is having an anaphylactic shock in order to get immediate help. Symptoms of anaphylaxis include; hives, itchy skin, trouble breathing or wheezing, diarrhoea, vomiting, swollen throat or tongue, fainting, dizziness, weak, rapid pulse, and a drop in blood pressure. Although one might not get all these symptoms at once, if you or someone else has most of these symptoms, the simplest way to get help is to call 911 or your doctor if that’s easier.

7 Worst Oat Intolerance Symptoms

The 7 worst Oat Intolerance Symptoms - Test Your Intolerance (1)

Woman seated on the floor with arms around her knees curling forward

Avenin or oat exposure can trigger an autoimmune response from the body, and an individual can experience the Oat Intolerance Symptoms that include:

  1. Blotchy, irritated, itchy skin
  2. Rash or skin irritation on and in the mouth
  3. Scratchy throat
  4. Runny nose or Nasal congestion
  5. Itchy eyes
  6. Nausea
  7. Common cough

Unfortunately many of these symptoms can look like Covid, so we have helped you further understand the difference here.

Other less common but oat related symptoms include:

  • Vomiting
  • Diarrhoea
  • Stomach pain
  • Difficulty breathing
  • Anaphylaxis

Different people can experience different symptoms, but if your symptoms are similar to any of these, then chances are you might be allergic to oats. Mild sensitivity can trigger a runny nose or a scratchy throat. Still, a serious one is accompanied by difficulty breathing as the nasal passages swell up and can also exhibit symptoms like rashes and uncontrollable itches.

If the exposure is not reduced, the symptoms can further flare up and last for hours. Physical contact usually leads to skin-related symptoms, while consumption is accompanied by respiratory, digestive, and skin-related ones.

When children have a reaction due to wheat consumption, they experience a protein-induced enterocolitis syndrome (FPIES). FPIES affects the gastrointestinal tract causing symptoms like vomiting, dehydration, diarrhoea, and poor growth. If this condition drags on for a long time or is severe, it can lead to starvation and lethargy. Multiple foods can also lead to FPIES besides oats.

Oat allergy is different from most other allergies as most other food-related allergies focus on gluten, something commonly found in wheat. If the oats are grown in the same field as wheat or rye, then gluten allergy symptoms can also appear, making it impossible to diagnose the allergy by symptoms alone.

How Can I Diagnose Oat Intolerance?

Oat Intolerance Symptoms are not conclusive evidence for the presence of oat intolerance, and one must always depend upon scientific inquiry when possible. Thankfully, a simple blood test can diagnose oat intolerance alongside countless other allergies that an individual might have. If you take this test, not only will you know whether you’re intolerant to oats, but you will also know any other intolerances you might have and weren’t aware of.

Test sample kits can also be ordered online and allow individuals to manage their allergies in a meaningful manner that doesn’t disrupt their daily life or compromise their quality of life. Once you receive the kit in your mail, all you’ll have to do is collect your sample as instructed in the manual then mail it back to the lab. In the lab, experienced technicians will look at your sample and compare it to many other common food intolerances, and you will get an email in seven days with your results.

Conclusion

Oat intolerances are painful, especially when left undiagnosed. Regularly consuming anything that your body has shown a reaction to is dangerous, and can cause severe side effects like disorders, infertility and even sight issues. Getting tested is important, but also a handy way to eat without worry. Imagine how simple mealtimes for your family would be if you print the results from an allergy and Intolerance test and pin them to your fridge? Or go to a restaurant, pull the Healthy Stuff appout of your pocket and order stress-free? Test Your Intolerance are the team to help get you there.

Read more

Like this article? Then check out our most recent articles Do I Have A Gluten Bloat and How To Order A Food Allergy Testing Kit.

References

  1. TJCuk, J. R. Biesiekierski, P. Schmid-Grendelmeier and D. Pohl, “Food Intolerances,” Nutrients, 2019.
  2. Platts-Mills, T. Schuyler, A. J. Erwin, E. A. Commins and S. P. &. W. J. A., “IgE in the diagnosis and treatment of allergic disease,” The Journal of allergy and clinical immunology, pp. 1662-1670, 2016.
The 7 worst Oat Intolerance Symptoms - Test Your Intolerance (2024)

FAQs

How to test for oat intolerance? ›

Skin prick test: An allergist will prick or inject the skin with a small amount of the diluted allergen, in this case, oats. Blood test: If it is not possible to take a skin test, an allergist may take a blood test. These can be less sensitive in identifying allergies than skin tests.

What does an intolerance to oats feel like? ›

An allergy to oats might result in symptoms ranging from mild to severe, such as: blotchy, irritated, itchy skin. rash or skin irritation on and in the mouth. scratchy throat.

Can you be intolerant to oats but not wheat? ›

While wheat allergies and oat allergies can have similar symptoms, they are caused by sensitivity to different proteins. Wheat has four different classes of proteins, including albumin, globulin, gliadin, and gluten. That means it is possible to be allergic to oats but not to wheat.

What does an oat allergy look like? ›

People with an oat allergy will typically experience red, blotchy spots on the skin called urticaria , or hives. In some cases, an outbreak may occur if a person accidentally touches oats and then other parts of the body. For people with eczema, skin reactions range from the mild to severe.

How do you get an oat test? ›

You may submit an electronic application at ada.org using a credit card. To request a paper application, call 1-800-232-2159. After your application and fee are processed, you will receive instructions to contact Prometric (prometric.com) to arrange a date, time, and location for your test.

How can I test for food intolerance at home? ›

Unfortunately, right now there's no at-home test recommended for the diagnosis of food sensitivity. It's also important to consider what to do with your results once you have them.

How long after eating oatmeal will I poop? ›

There is no hard-and-fast rule for how quickly oatmeal will make you poop, since everyone's digestive system is different. How soon you poop will likely depend on when and how often you usually use the bathroom, any other things you've consumed that day, and the root cause of your constipation.

Are oats inflammatory? ›

Oatmeal has anti-Inflammatory properties.

Oats boast 24 phenolic compounds — plant compounds that have antioxidant properties. One antioxidant group called avenanthramides are found almost exclusively in oats and help reduce inflammation and protect against coronary heart disease.

Why do oats cause digestive issues? ›

Fiber overload

Abruptly increasing your consumption of high-fiber foods, such as oatmeal, can overwhelm your digestive system, leading to uncomfortable gas and bloating. To avoid excess gas that is a result of too much fiber, make sure to consume enough water to help the digestive process.

Why do I feel sick after eating oats? ›

Many people with celiac disease are told to avoid eating oats because they might be contaminated with wheat, rye, or barley, which contain gluten. But in people who haven't had any symptoms for at least 6 months, eating moderate amounts of pure, non-contaminated oats seems to be safe.

What foods is avenin found in? ›

Avenin is a water-soluble protein in oats similar to gluten protein in wheat, barley and rye. IL-2 is a sensitive marker of activation of T-cells, which are white blood cells that function as the body's disease fighting soldiers.

Can oatmeal cause malabsorption? ›

The intake of oat dietary fibers can delay gastric emptying and affect absorption of nutrients and the motility in the small bowel (6).

How do you treat oat intolerance? ›

For allergies related to protein, it's best to avoid oats completely. Like any other food allergy, it's important to carry an epinephrine auto-injector. Severe reactions can happen at any moment and you need to be prepared. Mild symptoms can be treated with over-the-counter or prescription medications.

What is the cross reactivity of oatmeal? ›

The cross-reactivity rate to oats was found to be 33.3% (3/9). The study also concluded that IgE mediated reaction to oat may be due to allergens different from wheat gliadin and glutenin extracts (21). Another research demonstrated the cross-reactivity between millets, rice, corn, and other cereals.

Are oats one of the 14 allergens? ›

The 14 allergens are: celery, cereals containing gluten (such as wheat, barley and oats), crustaceans (such as prawns, crabs and lobsters), eggs, fish, lupin, milk, molluscs (such as mussels and oysters), mustard, peanuts, sesame, soybeans, sulphur dioxide and sulphites (if the sulphur dioxide and sulphites are at a ...

Is there a blood test for avenin? ›

This IgE allergy test uses a blood sample to determine if you are allergic to oats. The protein called avenin in oats is what causes allergic reactions in some people. Others may find that they are not, in fact, allergic or have an oat sensitivity, rather they may have a gluten sensitivity or celiac disease.

What makes oats hard to digest? ›

Raw oats are high in resistant starch, which is difficult for many people with IBS to digest. However cooked oats are low in resistant starch. What are resistant starches? Resistant starches are not digested in the small intestine, but in the large intestine where they can produce gas leading to IBS symptoms.

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