Do you often have stomach pain or digestive problems? Many people suffer from an intolerance to certain foods.

Fatigue, lack of energy, and digestive problems could be clear signs of a yeast intolerance. It is found in many foods. It is especially present in bread and sweet baked goods, but also in sauces and sweets. Even beer and wine contain yeast. Cheese, kefir, or fruit juices can also contain traces – as can some cosmetics or dietary supplements.

An intolerance to yeast does not have to be felt immediately. It can develop slowly and therefore be noticed late.

What is yeast?

Yeast consists of yeast fungi. It is used in many foods for fermentation. By adding yeast, sugar as well as carbohydrates can be converted into alcohol.

Did you know that even wine and beer contain yeast? It is added to trigger the fermentation process. Fermentation breaks down sugar and converts it into alcohol.

Yeast is used in baked goods to make the dough airy. Yeast also influences a process that causes the dough to rise. But yeast is not only used in food or alcoholic beverages; it is also found in cosmetics and many medications.

Can you be allergic to yeast?

A yeast intolerance is not uncommon. Many people react intolerantly or even allergically to yeast fungi.

A yeast intolerance can have many facets. However, most affected people mainly suffer from symptoms related to the digestive tract. The immune system is not involved in an intolerance. Usually, the body reacts intolerantly because it lacks a specific enzyme or transport protein. The body is then unable to fully metabolize the yeast – often a yeast intolerance is due to an enzyme deficiency.

 

 

In the case of an allergy, the immune system is affected. For many people who suffer from an allergy, it is enough to come into contact with the food. Consumption often triggers severe symptoms. Usually, the entire body reacts with a strong allergic reaction. Symptoms can range from skin rash to life-threatening conditions. Often, the airways swell during an allergic reaction. In rare cases, this can even lead to an anaphylactic shock.

If you know you have an allergy, you should be very careful not to come into contact with the food. An allergy is rare but can still occur. Since yeast is contained in many foods, you need to be especially cautious if you have a yeast allergy.

Causes of a yeast intolerance

Often, the causes of an intolerance are not clearly identifiable. Usually, an intolerance arises because the body is unable to digest certain components of the yeast. Your body cannot properly absorb the yeast and therefore reacts with discomfort.

If you suffer from a yeast intolerance, the components are broken down into degradation products. These then cause corresponding symptoms. Most often, the symptoms are due to a deficiency of a specific enzyme. Therefore, your body is unable to properly process the yeast.

An intolerance can also be triggered by consuming too much yeast too often. Your body then reacts intolerantly.

What are the symptoms of a yeast intolerance?

Everyone reacts differently to an intolerance. However, an intolerance usually has a strong impact on quality of life. Most affected individuals mainly suffer from problems in the digestive tract.

Bloating, digestive disorders, and stomach cramps are often common. Many people also suffer from bad breath, fatigue, and mood swings. Concentration difficulties, irritability, headaches, and skin reactions (e.g., eczema) can also indicate an intolerance.

Difference between a yeast allergy and an intolerance

With an allergy, the immune system is affected as soon as you ingest the allergenic substance. Your body recognizes a normally harmless foreign substance as an allergen and accordingly produces antibodies.

In a yeast allergy, the immune system usually reacts to the protein contained in the yeast.

Typical symptoms of an allergy include swelling of the lips and tongue, nausea, vomiting, skin rashes, and respiratory diseases. In the worst case, an allergy can lead to an anaphylactic shock.

If you suffer from a yeast allergy, it can be enough, for example, to come into contact with yeast powder while baking. The symptoms of an allergy are significantly more severe than those of an intolerance. An allergy can lead to a life-threatening condition.

In an intolerance, the gastrointestinal tract is mainly affected. People who suffer from an intolerance usually experience symptoms such as diarrhea, nausea, bloating, or constipation.

The symptoms caused by an intolerance are significantly milder than those of an allergy. Another major difference between an allergy and an intolerance is the timing of symptom onset. In an intolerance, symptoms can appear hours or sometimes even days later. Allergy symptoms, on the other hand, usually appear within minutes.

How can a yeast intolerance be tested?

Do you react with classic allergy symptoms after eating yeast? The easiest way to find out if you actually have an allergy is through testing by a doctor.

The doctor can either perform a blood test or a prick test on you. A so-called epicutaneous test also provides information about whether you suffer from an allergy.

To determine a yeast intolerance, you can alternatively carry out an elimination diet. For this, you leave the intolerable food out of your diet for a certain period. It is best to keep a food diary alongside the elimination diet, where you note exactly what you have eaten and which symptoms you experience afterward.

The food diary provides insights not only for you but also for your doctor about what you have eaten and which symptoms you had. This allows you to work with your doctor to rule out which foods you react intolerantly to. Be very precise. Symptoms of an intolerance can also appear many days later.

Only if you write down all foods and symptoms very precisely can the food diary provide insights.

Alternatively, you can also do a home intolerance test with a hair sample, such as from Medicross. Your hair sample is analyzed in a lab – without any blood draw or doctor visit. This way, you receive indications of potential reactions to yeast and over 750 other substances.

 

 

Does yeast contain histamine?

Yeast basically does not contain histamine. However, it is possible that histamine is produced during the manufacturing of certain foods to which yeast is added. Scientists are still very divided on the effects of yeast regarding people who suffer from histamine intolerance.

However, it is different with yeast extract. Yeast extract is produced by breaking down killed yeast cells. This process can release high amounts of histamine. 

People who suffer from histamine intolerance should therefore avoid consuming yeast extract. The extract can trigger strong symptoms and harm the body.  

What to do in case of a yeast intolerance?

A yeast intolerance can be well managed by avoiding yeast consumption for a certain period. Give your body the chance to recover from the intolerance. Only then can the symptoms completely disappear and your body can regenerate.

Completely avoiding yeast is not easy because it means you have to remove many foods from your diet that are normally taken for granted by most people.

This includes all kinds of bread, rolls, and other baked goods. Alcoholic beverages like wine and beer contain yeast and should therefore also not be consumed. Vinegar, soy sauces, fermented products, or ready-made sauces can also be problematic.

Therefore, pay close attention to the ingredient list when shopping. Yeast is often included in processed products, even if you wouldn’t expect it.

What are the alternatives to yeast?

A yeast-free diet is not easy, but definitely possible. There are many yeast-free foods you can use as alternatives. These include:

• Buckwheat, millet, quinoa

• Rice cakes

• any kind of vegetables

• Meat and fish

• Eggs

As a yeast substitute for doughs, for example, baking powder, baking soda (in combination with an acid like lemon juice or vinegar) as well as homemade yeast water (made from sugar, water, and dates) are suitable. These alternatives work as leavening agents, though with a slightly different taste and baking method.

Basically: if the food has not been processed, you can usually eat it without any problems. Vegetables and fruits naturally contain no yeast and can therefore be eaten safely even with a yeast intolerance.

Even if the diagnosis of a yeast intolerance is initially a shock for you – don’t let it limit you. There are many creative ways to prepare delicious yeast-free dishes.