Intolerance Archives - Lifelab Testing

The 7 worst Yeast Intolerance Symptoms

Yeast is a very common ingredient in foods and drinks we regularly consume. Brewers and bakers deal with yeast the majority of the time. Having a yeast intolerance means keeping away from some baked goods and beers. However, yeast intolerance isn’t too common. Yeast intolerance mostly stays in the gastrointestinal tract causing digestive issues. But if you suffer from general body pain, hives, or anaphylactic shock after consuming a food or drink that contains yeast, then you might be suffering from a yeast allergy.

1-2% of adults worldwide experience yeast intolerance or allergy, according to studies. The number climbs above 20% if you consider the children. [1] If you’re among those 140 million people, things won’t be easy for you, but thankfully, little management can go a long way.

Yeast intolerance symptoms are similar to irritable bowel syndrome (IBS). Due to this, many medical practitioners often confuse the two, and misdiagnoses can prove very unhealthy as the quality of life keeps on depreciating. You can read “How to avoid Yeast’ to know more about IBS symptoms.

What Is Yeast Intolerance?

Yeast is a fungus that is actively used around the globe and is responsible for foods we love, including baked ones, yoghurt, and wine! Even though we use yeast in food, yeast is also naturally found in the human body.

Yeast naturally found in the body is known as candida. Usually, other microorganisms keep candida in check to prevent it from overgrowing or being imbalanced. However, using antibiotics or other lifestyle changes can result in an imbalance causing candida to grow either in the throat, vagina, skin, or gut. In some rare cases, it can affect internal organs. When candida overgrowth occurs, it leads to yeast infection.

Yeast intolerance refers to the antibody Immunoglobulin G or IgG production when exposed to yeast. On the other hand, if you’re allergic to yeast, the immune system produces Immunoglobulin E or IgE antibodies that trigger a much more violent response [2].

Generally, yeast intolerance, like other food sensitivities, can disappear over time even without mediation but knowing your intolerance is necessary to contain it better and limit its harmful effects. If you have a yeast intolerance or yeast allergy, you might also experience a reaction to other fungi like mould. If you have a fungi allergy, avoid eating foods with mould, yeast, and any that involve fungi production.

7 Worst Yeast Intolerance Symptoms

Man holding his leg. Source

Different people experience different kinds of yeast intolerance symptoms. Where one might be experiencing unexplained weight gain, others might have skin complaints like eczema, itch, or even rashes.

If you suspect that you might have yeast intolerance, then discussing it with a medical professional is the best course of action. Some of the most common yeast intolerance symptoms include:

  1. Bloating
  2. Breathing difficulties
  3. Joint pain
  4. Dizziness
  5. Rashes
  6. Migraine
  7. Lethargy

While these symptoms are common and easy to detect, continued exposure to yeast and refusal to discontinue usage can lead to worse symptoms, including

  • Uncontrollable Itch
  • Rapidly spreading eczema
  • Severe Anxiety, often leading to depression
  • Chronic sinusitis

At first glance, one might confuse the yeast intolerance symptoms with that of IBS, and if you do that, you’re not alone. Even seasoned medical professionals have been found guilty of misdiagnosis. 

Coming in contact with yeast can lead to skin issues like rashes and uncontrollable itches that can last for hours. These symptoms can flare up upon yeast consumption, in which case the gut can experience excessive wind production as the body isn’t able to neutralize it.

In addition, you can also experience chronic headaches, persistent sinusitis (stuffy nose and airways across the year), or migraines that negatively affect the quality of your life.

Some people experience symptoms like redness and blotchy skin after consuming alcohol or alcoholic beverages. It is a misconception that this is due to yeast intolerance, which it isn’t. This common rash is an allergy-like reaction (typically not a true allergy) to other substances in the drink like sulphur dioxide. Sulphur dioxide often causes an allergy-like reaction, and it’s good to look out for it since it’s not only used in alcoholic beverages only but foods containing wheat as a preservative. When looking out for a yeast intolerance, cancel out rashes.

Because of the close resemblance of most intolerance or allergy symptoms, the conclusive evidence for diagnosing a yeast intolerance is the intolerance test.

How Can I Diagnose Yeast Intolerance?

A simple blood sample can help diagnose yeast intolerance alongside many other allergies or intolerances that you may have. Knowing your allergies and intolerances enables you to manage them effectively and keep yourself and others around you safe. Order an intolerance test kit online to help you rule out yeast intolerance and other common ones. Ordering online is simple since you don’t have to waste time going to your doctor’s office, and the kit comes in your mail a few days later. All you’ll do then is read through the instructions and send back your sample to the lab for analysis. You will then get the results in a week’s time.

Simple actions like cutting back on wine consumption and reducing the intake of yeast-rich foods like yoghurt can go a long way in ensuring that your body stays in optimal shape and health. Don’t keep indulging in yeast-rich foods and drinks if you’re intolerant since it will damage your intestine walls leading to a lack of nutrient absorption. If you aren’t sure how to substitute your favourite beverages and meals, talk to your doctor or nutritionist on the best way forward. A professional will help you replace the things you love containing yeast with similar yummy foods but without the yeast.


An undiagnosed Yeast intolerance is dangerous. If you continue to leave it in your diet you could see increased cases of thrush, bloating and lethargy, but in extreme circumstances, stomach ulcers and digestive issues.

Lifelab Testing offer a range of affordable tests that can help to point you in the direction of a yeast intolerance, which gives you the ability to change your diet, cut out the risks and change your life.


  1. C.J Tuck, 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.

Where To Get An Intolerance Testing Kit

Bloating, nausea, fatigue – there are all kinds of symptoms you might experience if you’re living with an intolerance. Not only can these sensations be incredibly uncomfortable, but they can also be dangerous if your intolerance is severe.

Unidentified intolerances can lead to conditions such as nutrient deficiencies and even an irritated gut. That means it’s crucial to get an intolerance testing kit as soon as you can, if you’re experiencing symptoms. But where can you find one that’s quick, easy and reliable?

At Lifelab Testing, we offer intolerance testing kits that contain everything you need to take a small blood sample in the comfort of your home. Learn more about our simple test kits below.

Basic intolerance testing kit

Do you suspect you know what’s to blame for your symptoms? If you’ve noticed that you consistently feel discomfort a couple of hours after eating a potential allergen (for example, gluten, dairy or milk), our basic intolerance testing kit is for you.

The basic kit can test for 40 common food and drink intolerances, is easy-to-use and delivered direct to your door. All you need to do is follow the instructions to take a quick skin-prick blood test at home, before sending it back to our scientists using the prepaid packaging provided.

Our team will analyse your sample, searching for an antibody known as IgG4. This is produced by your immune system every time you eat something that sparks your intolerance. A high presence of IgG4 will help us identify the substance that’s causing your problems.

Complete intolerance testing kit

Alternatively, you may have no idea what’s causing your symptoms. Almost anything can spark a food intolerance, so don’t give up if you’ve ruled out the common antigens such as gluten and lactose.

Our complete intolerance testing kit can identify 160 key food and drink intolerances in just one sample. This makes it a lot quicker and easier than other methods of diagnosis, such as the elimination method. Imagine trying to cut out 160 different foods in turn!

Once you’ve taken your test and received your results, our complete test also gives you access to a free 30-minute consultation with a qualified nutritionist. They will be able to guide you through the results of your test and advise you on any dietary steps to take in the future.

Order your intolerance testing kit

If you suspect you have a food intolerance, it’s important to find out for sure to prevent the problem from getting worse. Our certified team promise 100% accurate results or your money back. So what are you waiting for? Order your intolerance test from Lifelab Testing today.

Allergy vs Intolerance

In the UK, allergies and intolerances are both a common problem – and the number of cases is increasing year on year. But if you’ve noticed uncomfortable symptoms after eating particular foods, it can be difficult to work out which condition you’re experiencing.  

So, allergy vs intolerance – what’s the difference? And how can you discover what’s causing your symptoms? In this blog post, we’ll explain the difference between an allergy and intolerance and how our tests can help you take control of your diet.

What is an allergy?

If you’re suffering from an allergy, it means your body experiences an allergic reaction in response to certain substances (known as allergens). Your immune system perceives the substance as a hazard and responds by releasing proteins called IgE immunoglobins.

These proteins increase your body’s secretion of histamines – a chemical that triggers an allergic reaction. This can result in symptoms such as vomiting, hives, swelling or itching.

An allergic response often starts a few minutes after you’ve eaten an allergen. However, in rare cases, it can take a couple of hours for your symptoms to appear.

What is an intolerance?

The main difference between an allergy vs an intolerance is the fact that an intolerance isn’t an immune response. If you’re intolerant to certain foods, it means that your body finds it difficult to break them down and digest them.

In response, your system releases a different type of immunoglobin known as IgG4. This can cause a range of uncomfortable symptoms, usually gastric issues such as bloating, nausea or diarrhoea.

There’s also evidence that certain intolerances can induce a range of other symptoms, including headaches and fatigue. Although research is ongoing, there also seems to be the link between gluten intolerance and inflammation.

Unlike allergies, intolerances are almost never life-threatening.

How do I find out which I have?

At Lifelab Testing, we offer a range of home allergy and intolerance tests. Our range of allergy tests will look for raised levels of IgE in your blood, while our intolerance tests will identify IgG4.

If you’re not sure whether you have an allergy or an intolerance, our complete body test can diagnose 40 different allergies and 80 intolerances. This test will search for both IgE and IgG4, arming you with the information you need to make confident decisions about your diet.  

Order your home test kit today!

Whether you suspect you’re suffering from an allergy or an intolerance, it’s important to get to the bottom of your problem. Order your simple home test kit from Lifelab Testing today and enjoy 100% accurate answers or your money back.