Understanding food intolerances: What a blood test really reveals
ca. 5 Minuten
Why we often feel tired, bloated, or unwell - and how an intolerance test can help
You seem to eat healthily and take care of yourself - yet you often feel tired or bloated, or experience vague symptoms such as headaches, blemished skin, or difficulty concentrating? These symptoms can have many causes. One that is often overlooked is so-called food intolerances. Unlike allergies, these are not acute, severe immune reactions, but chronic processes that can put a strain on your body over a longer period.
With a modern intolerance test based on a blood test, you can find out what is affecting your body - conveniently from home. In this article, you'll learn how a blood test for food intolerances works, what scientific evidence supports it, and why a personalized nutrition plan can significantly improve your quality of life.
What exactly is a food intolerance?
Unlike a classic food allergy, in which the immune system reacts strongly to an allergen by producing IgE antibodies, food intolerances often develop gradually. They are frequently based on the production of IgG antibodies against certain food components.
These IgG reactions are controversial in the scientific community. Some experts consider them a normal part of the immune system, while others see them as an indication of overload or irritation caused by a food. The fact is: More and more studies and personal accounts show that many people affected experience a significant improvement in their symptoms after an appropriate blood test for food intolerances and a targeted dietary change.
How does an IgG-based intolerance test work?
The mybody® intolerance test is based on a simple blood sample that you can easily collect at home. The sample is analyzed in a specialized laboratory. This measures whether and in what quantity IgG antibodies against certain foods are present in the blood.
What makes it special: The test covers over 280 commonly eaten foods - from grains, dairy products, fruit, vegetables and nuts to spices. This gives you a comprehensive picture of your personal food tolerance.
👉 Learn more: mybody® food intolerance IgG blood test
What symptoms can be caused by an intolerance?
The range of symptoms is broad, and they are not always clear-cut. These include:
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Bloating, diarrhea or a feeling of fullness
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Headaches or migraines
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Skin problems such as atopic dermatitis or acne
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Fatigue and exhaustion
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Joint pain
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Difficulty concentrating
Precisely because the symptoms are so nonspecific, it is difficult to link them to a particular food. A structured food intolerance test can help provide clarity.
Scientific controversy: What do studies say about IgG tests?
Opinions differ on the significance of IgG antibodies. Some professional organizations, such as the German Society for Allergology and Clinical Immunology (DGAKI), take a cautious stance. Other studies, however, show that an elimination diet based on an IgG food intolerance test has led to a significant improvement in quality of life for many patients - particularly those with chronic digestive issues or migraines.
It's important to note that the test does not replace a medical diagnosis; it is intended as a guide. In combination with professional However, nutritional counseling can provide valuable guidance.
Personalize your diet - instead of giving things up across the board
The goal is not to give up everything completely, but to consciously reduce foods that don't agree with your body. Ideally, by making targeted adjustments to your diet, you can ease the burden on your gut, calm your immune system and enjoy more energy and well-being in the long term.
mybody® supports you with a comprehensive test, a digital results report and practical dietary recommendations - with a follow-up from nutrition experts if you wish.
👉 Find out more: Blood intolerance test – conveniently carried out at home
Conclusion: Your health starts with your diet
An unbalanced approach to food can significantly affect your well-being – often without you realizing the connection. A well-founded intolerance test using a blood sample can help you better understand your body and take targeted action.
Want to find your personal path to more energy and well-being? Then the at-home intolerance test is your first step.
Scientific references
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Stapel, S.O. et al. (2008): Testing for IgG4 against foods is not recommended as a diagnostic tool: EAACI Task Force Report. Allergy, 63(7), 793–796.
👉 DOI: 10.1111/j.1398-9995.2008.01705.x -
Dölle-Bierke, S. et al. (2021): DGAKI and GPA position paper on the use of IgG tests for food intolerances. DGAKI Position Paper
👉 www.dgaki.de -
European Academy of Allergy and Clinical Immunology (EAACI) (2017): IgG antibodies in food intolerance – Position paper.
👉 www.eaaci.org -
Niggemann, B. & Beyer, K. (2009): Diagnostic approach to suspected food allergy in children and adults. Journal of Allergy and Clinical Immunology, 124(6), S114–S118.
👉 DOI: 10.1016/j.jaci.2009.10.008 -
Matsuo, H. et al. (2015): Food-specific IgG antibodies in healthy and symptomatic individuals. Biochemical and Biophysical Research Communications, 458(3), 582–586.
👉 DOI: 10.1016/j.bbrc.2015.01.158 -
Turner, P.J. et al. (2021): Food allergy diagnosis and management. BMJ, 372:n251.
👉 DOI: 10.1136/bmj.n251 -
National Institute for Health and Care Excellence (NICE) (2011): Food allergy in children and young people.
👉 www.nice.org.uk
