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Important note: The information provided in this article is solely for neutral education and general information. It does not replace professional medical advice, diagnosis, or treatment by a doctor or allergist. Medical professionals should always be consulted for health concerns.

Many people suffer from intolerances. Do you regularly experience stomach pain, bloating, or diarrhea? These symptoms may indicate an onion intolerance.

Onions are an ingredient in many dishes. Most ready-made meals contain onions. They are found in many salads, soups, and pasta dishes. The reason for using onions is not only the flavor but also the antibacterial effect. Onions are generally very healthy and good for your body. However, this only applies if you do not suffer from an intolerance.

Onions contain numerous secondary plant compounds such as flavonoids, disulfides, trisulfides, and cepaenes – these have antimicrobial effects but can cause discomfort in sensitive individuals.

People who suffer from an onion intolerance usually also react intolerantly to other foods like garlic, leeks, or chives. They are part of the allium family (allium vegetables) and therefore contain the same components as onions.

Below you can read everything about intolerance to onions.

What is a food intolerance?

Do you experience symptoms like stomach pain, diarrhea, nausea, or bloating after eating certain foods? You are likely suffering from a food intolerance.

Your body cannot digest a certain food or reacts with allergy-like symptoms to it. An intolerance to a specific food is also called a food intolerance.

 

 

After eating the intolerant food, your body reacts with various symptoms. Usually, the digestive tract is affected. The classic symptoms of a food intolerance are therefore usually nausea, diarrhea, vomiting, or bloating.

Other possible signs include dizziness, skin reactions such as rash or hives, itchy lips, or a stuffy nose—especially in response to allium vegetables like onions or garlic.

Fatigue and exhaustion can also be indicators of a food intolerance. To find out which food you react to, it is best to see a doctor.

If the symptoms worsen or occur immediately after eating the food, you are likely suffering from a food allergy. In that case, you must contact a doctor immediately. An allergic reaction can sometimes be life-threatening. It should never be taken lightly.

The symptoms of an allergy mostly affect the immune system. Skin rashes, itching, swelling, and even difficulty breathing are common in allergies.

Are onions healthy?

The onion is a member of the leek family. It is one of the most widely used vegetables worldwide. It has a long shelf life and is versatile in use. For this reason, it is valued as a very important food in many cultures.

In China, it is used as a medicinal plant. The bulb is used to treat insect bites, scars, earaches, or coughs. It is one of the oldest cultivated plants of humanity. It was already grown more than 5,000 years ago. Even then, it was used to season dishes as well as a vegetable.

 The origin of the onion can be traced back to the Bronze Age in Central Asia. In ancient Egypt, it was sacred and was even placed in the tombs of the dead because of its concentric rings.

Did you know that the bulb was even named medicinal plant of the year in 2015?

Antioxidants and sulfur compounds are major components of the bulb. These special ingredients have antibacterial and anti-inflammatory effects. Additionally, onions contain many minerals and vitamins. Vitamin C and folic acid are also part of this health-promoting bulb.

Red onions also provide anthocyanins – plant pigments with antioxidant effects that studies suggest can protect cells.

If you do not suffer from onion intolerance, consuming this healthy bulb is actually highly recommended.

What are the symptoms of onion intolerance?

In the case of onion intolerance, the digestive tract is usually affected. Classic symptoms include diarrhea, bloating, abdominal pain, and nausea.

Many affected people also suffer from skin problems or feel a certain level of fatigue after eating onions.

It is important to clearly distinguish between onion intolerance and onion allergy when symptoms occur. An allergy usually causes much more intense symptoms. Those affected suffer from significantly stronger symptoms. In addition to intolerance symptoms, an allergy usually also triggers symptoms such as skin rash, itching, or even breathing difficulties.

If you notice any symptoms after eating onions, you should urgently see a doctor. The symptoms can range up to an allergic shock.

Can you also have an allergic reaction to onions?

Although the onion is fundamentally a very valuable food, it still causes discomfort in many people after consumption.

What are the causes of onion intolerance? The causes vary greatly from person to person.

Basically, the bulb contains a lot of sulfur compounds. These substances include certain amino acids. While these are generally beneficial for you and your gut flora, they still trigger symptoms of intolerance in many people. Doctors refer to this as onion intolerance or allium intolerance.

It is not uncommon for the human body to develop antibodies against certain foods. Most often, these are so-called IgG-4 antibodies. In most cases, these lead to symptoms resembling an allergy.

Especially if you frequently eat onions, this can be the case. By reducing consumption, the symptoms should then decrease.

Many people with an onion intolerance also suffer from intolerances to other vegetables from the same family. For this reason, people with an onion intolerance usually also have Problems with garlic consumption, leek, spring onions, or shallots..

The reaction can be immediate or delayed – from 30 minutes up to 48 hours after consumption.

In the case of an allergy, the immune system reacts immediately. If this applies to you, urgently see a doctor.

Have an onion intolerance test done

To find out if you suffer from an onion intolerance, it is advisable to have a special test done. Especially if you do not suffer symptoms immediately after consumption but they appear later, an onion intolerance is very likely. Doctors also refer to this as an intolerance.

To find out if you suffer from an onion intolerance, have tests done. You can also conveniently do this from home. Usually, the test checks for several foods at once.

 A modern option for analysis is a non-invasive intolerance test with a hair sample, as offered by Medicross – simple, discreet, and reliable.

A test will give you certainty afterwards about whether and to which foods you react intolerantly.

What to do with an intolerance?

On Avoid onions having to avoid them sounds difficult at first, as they are often in ready-made products are hidden. But there are ways to improve:

1. Change the preparation method: cooked onions are often better tolerated than raw consumed bulb, as heat changes some irritants.

2. Choose mild varieties: A white onion or shallots are often milder than sharp red varieties.

3. Use digestive aids: Spices like fennel, ginger, or caraway in the meal can help digest the onion better. digest.

4. support gut flora: A probiotic nutrition or a gut flora complex can balance the Gut promote and the Tolerance improve in the long term.

Discover alternatives: Fennel bulbs or celery stalks offer a similar texture and a spicy aroma without the typical allium irritants.

An intolerance to onions is particularly unpleasant. When you eat out at a restaurant, most dishes already contain onions. They serve as a flavor carrier and seasoning.

With an intolerance, it is important that you generally avoid eating onions. Even if you like the bulb in principle, you should avoid it if an intolerance has been diagnosed. Continuing to eat it harms your body.

Only by completely removing the vegetable from your diet can the symptoms improve in the long term.

Besides avoiding onions, you can also strengthen your gut. It has probably been heavily affected by the intolerance. Consume many probiotic foods. They help your gut build a healthy gut flora.

If you have questions on the topic, you can get advice at a pharmacy. A gut flora complex might help you get your gut back in shape faster. The complex contains gut bacteria and thus promotes your gut health. Additionally, it protects it.

If you have an intolerance but your symptoms are not severe, sometimes preparing onions differently can help. You can add herbs and spices alongside the onions that help your body digest the onion better.

Fennel, ginger, or caraway can support digestion and improve the tolerance of allium vegetables.

Observe your body after eating. As soon as the symptoms worsen again, you must urgently avoid eating onions.

Although onions are a healthy addition to many dishes, you should still avoid them if you suffer from an intolerance.

The symptoms can be very painful in the worst case and are never worth it. Be sensible and reduce your consumption or avoid it altogether. You will be doing your body a favor.

In the long run, it is possible that your body recovers from the intolerance. After a year of avoidance, you might be able to eat onions again without any problems. Test with small amounts and pay close attention to your body.

What alternatives to onions are there?

If your intolerance is very severe, you should definitely avoid eating onions. However, this does not mean that your meals will taste boring. There are many other spices that resemble onions but are easier to tolerate.

Fennel is easy to digest and also serves as a good substitute for onions. Cut the fennel, just like the onion, into thin strips. You will be amazed at how similar the two vegetables are.

Celery is also a good onion substitute. The taste is not quite as sharp but also very intense.

Ginger and turmeric are great roots for seasoning dishes. They also have a positive effect on your digestion and are very nutritious.

Additional guidance: profile and analysis as a building block

To avoid being in the dark in everyday life, an alternative self-test can provide additional guidance. Medicross offers alternative analyses from the field of complementary medicine based on a hair sample that can provide clues to individual sensitivities to various foods. Such reactions to food are often individual and complex.

An alternative test can help you as a building block to better understand your personal profile and decide for yourself whether a low-histamine diet or temporary avoidance of certain allium vegetables is worth trying. This gives you confidence and allows you to make your diet more conscious again. Please note explicitly: Our alternative intolerance tests (such as hair analysis) do not constitute a medical diagnosis, are medically controversial, and cannot replace a medical allergy diagnosis.

FAQ

Why do I tolerate cooked onions better than raw ones?

This is due to the thermal change of the ingredients. When heated, certain sulfur compounds and enzymes that irritate the stomach lining in raw form and cause Bloating can lead to, partially broken down or converted. In addition, the cell structure of the onion becomes softer, which helps Gut makes the work easier.

Are onion intolerance and histamine related?

Yes, this connection is often observed. Although onions themselves do not contain extremely much Histamine, but act as liberators. This means they promote the release of the body's own histamine. People with a Histamine intolerance therefore often react sensitively to allium vegetables. A low-histamine Preparation can help here.

Do I have to avoid onions for life if I have an intolerance?

Not necessarily. Often a period of avoidance helps, during which the system can regenerate. After targeted support of the gut flora and calming of the irritation thresholds, many report that small amounts are well tolerated. It is often a matter of quantity and individual daily condition.

Your body communicates with you through signals. A Onion intolerance is not a prohibition, but an invitation to make your diet more individual and mindful. With a little experimentation and the right knowledge, you will quickly return to enjoying food without discomfort.

Sources

https://www.mein-allergie-portal.com/nahrungsmittelallergie/234-zwiebelallergie-und-zwiebelunvertraeglichkeit.html

https://www.dge.de/gesunde-ernaehrung/gezielte-ernaehrung/allergien-und-unvertraeglichkeiten/