Your guide to intolerance testing for greater well-being
ca. 20 Minuten
Do you often feel inexplicably tired, struggle with bloating or skin problems, even though you try to eat healthily? If so, an intolerance test could uncover the hidden causes. Often, these are not classic allergies but delayed IgG reactions to foods that lie behind such vague symptoms.
When the body suffers in silence: finding the cause
You can think of your body as a finely tuned orchestra. Every food you eat plays an instrument. But what happens when an instrument suddenly plays a wrong note? Sometimes the note is loud and shrill - an immediate, dramatic reaction. Much more often, though, it is quiet and barely audible, yet still disrupts the harmony over time.
This is exactly why so many people suffer from symptoms without knowing the cause. They look for the dramatic reaction but overlook the subtle disturbances that affect their well-being day after day.
Allergy or intolerance? The key difference
The dramatic reaction is a classic food allergy. Here, your immune system sounds the alarm immediately and intensely by releasing so-called IgE antibodies. Symptoms - from rashes and swelling to shortness of breath - usually appear within minutes. This reaction is clear-cut and can easily be linked to a specific trigger.
Much more common, however, are the subtle disturbances: delayed food intolerances. Your body produces IgG antibodies in response to certain food components. The key point is that symptoms only appear hours later, or even up to 72 hours later.
An IgG-mediated reaction is not an allergic emergency, but rather a sign that your immune system is overreacting to a food. This ongoing stress can lead to chronic, low-grade inflammation, which manifests itself in a wide range of symptoms.
This significant time delay makes it almost impossible to identify the culprit without a targeted intolerance test. Who would think that Monday's dinner could be responsible for Wednesday's headache? You may be wondering how to tell the different types of intolerances apart. Find out more in our article about the different types of intolerances.
Intolerance vs. allergy at a glance
This table summarizes the key differences to help you make sense of your symptoms.
| Feature | Food intolerance (IgG-mediated) | Food allergy (IgE-mediated) |
|---|---|---|
| Type of reaction | Delayed immune response | Immediate immune response |
| Timing | Hours to 72 hours after eating | Within minutes to 2 hours at most |
| Symptoms | Nonspecific: bloating, fatigue, headaches, skin problems | Clear symptoms: itching, swelling, rash, shortness of breath, circulatory problems |
| Antibodies | Immunoglobulin G (IgG) | Immunoglobulin E (IgE) |
| Severity | Disruptive and chronic, but rarely life-threatening | Can range from mild to life-threatening (anaphylactic shock) |
As you can see, the differences are significant. While an allergy is immediately obvious, an intolerance often creeps into everyday life unnoticed.
A widespread problem that many people can’t make sense of
If you recognize yourself in these descriptions, you’re definitely not alone. Many people sense that something is wrong but can’t put their finger on it. Current data strongly confirms this feeling.
A representative 2021 YouGov study shows that around 21% of adults in Germany are affected by allergies or intolerances to foods such as milk, gluten, or nuts. Another interesting finding: at 62%, women reported being affected much more often than men. If you’d like to read the full study, you can find out more about the study results here on doc-ulm.de.
A blood test that specifically measures IgG antibodies, such as the mybody®x intolerance test, can provide valuable clarity. It analyzes your individual immune response to a wide range of foods and helps you identify the “hidden troublemakers” in your diet. This finally gives you a concrete starting point to take control of your well-being and restore harmony in your body.
The available testing methods and what they really tell you
Finding the right “intolerance test” can quickly feel like navigating an impenetrable jungle. Everywhere you look, you read about IgG tests, breath tests, or genetic tests. Don’t worry, we’ll shed some light on the subject and explain in simple terms which method makes the most sense in each situation.
Think of your immune system as your body’s security team. A conventional allergy test (IgE test) looks for the loud “alarm bells” - IgE antibodies. They trigger an immediate, often severe reaction in the case of a true allergy. It’s like an alarm that shrieks when someone breaks in.
An IgG blood test, such as the mybody®x intolerance test, takes a different approach. It doesn’t listen for a loud alarm; instead, it detects the “silent observers”: IgG antibodies. An elevated level of these antibodies is a sign that your immune system is reacting excessively to a particular food. So, it’s not a sudden alarm, but rather a sign of chronic strain that can lead to typical delayed symptoms.
The IgG blood test for delayed reactions
The IgG blood test is just the right tool if you suffer from diffuse, chronic symptoms that occur hours or even days after eating.
- What is measured? The concentration of IgG antibodies against a wide range of foods.
- How does it work? A few drops of blood from your fingertip are all it takes. The lab then analyzes which foods your immune system reacts to particularly strongly.
- When is it useful? For nonspecific symptoms such as constant fatigue, bloating, skin problems, or headaches that you simply can’t link to any particular trigger.
An elevated IgG level is not an allergy diagnosis. Instead, think of it as your personal guide. It shows you which foods are currently putting a strain on your system and where taking a break might help restore balance.
Breath tests for sugar intolerances
Another issue entirely is intolerance to certain types of sugar that your body can’t digest properly. This is where breath tests come in.
- What is measured? The concentration of hydrogen (H2) in your breath after you’ve drunk a test solution (for example, one containing lactose or fructose).
- How does it work? If the sugar isn’t broken down in the small intestine, it moves on to the large intestine. There, bacteria get to work on it and produce hydrogen, which you then exhale through your lungs.
- When is it useful? If you suspect lactose intolerance (milk sugar) or fructose malabsorption (fruit sugar). These typically cause acute gastrointestinal symptoms shortly after consumption.
While breath tests reveal very specific digestive problems, an IgG test like the mybody®x food intolerance test gives you a much broader view of your immune system’s reactions.
These complaints are actually more common than many people think. According to a Statista survey, only 82% of Germans say they have no food intolerances. In other words, up to 18% of the population struggle with them. And although the Food Information Regulation (LMIV) requires 14 major allergens to be clearly labeled, testing remains crucial for uncovering hidden culprits in particular. You can check the figures for yourself in the survey on food intolerances on Statista.de.
This infographic can help you take the first step toward understanding your symptoms and deciding whether a blood test is right for you.
The decision tree makes it clear: the path to greater clarity begins with carefully observing your symptoms. A blood test can then be the crucial step toward finally getting concrete answers and making an informed decision about your health.
The mybody®x at-home test: simple and safe, explained
So you’ve decided to take an IgG-based food intolerance test and are wondering how it all works? Great! The idea of drawing your own blood can seem a little daunting at first. But don’t worry, we’ll show you just how simple, safe, and nearly painless the mybody®x food intolerance test really is to use at home.
You can forget long waits for doctor’s appointments and complicated procedures. With our test kit, you can take matters into your own hands, conveniently and whenever and wherever suits you best.
Your path to clarity in three easy steps
The entire process is designed to be as easy and safe as possible for you. We guide you from placing your order to receiving your personal results report. Here's how it works:
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Order and receive your test kit: Order your test conveniently online. In just a few days, the certified sampling kit will arrive in your mailbox. It contains everything you need, including easy-to-follow step-by-step instructions.
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Simple, low-pain sampling: Use the included lancets to collect a few drops of blood from your fingertip. The small prick is barely noticeable and takes just seconds. Collect the drops of blood on a special dried blood spot card - a clean and simple method.
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Activate and return it for free: Then activate your test online using your unique test ID. This step is important so we can later assign your sample to your account anonymously. Next, pack the sample in the prepaid return envelope provided and send it directly to our laboratory.
Once your sample has arrived, it will take just a few days for your detailed results report to be waiting for you in your secure mybody®x customer account.
Quality and security come first
When it comes to your health, trust and absolute security are essential. That's why we at mybody®x never compromise.
Your health and your data are in the best hands with us. We guarantee the highest standards - from analyzing your sample to protecting your privacy.
Our promise is based on three pillars that set us apart from many other providers:
- Certified specialist laboratory in Germany: Your blood sample is analyzed exclusively at a partner specialist laboratory in Germany certified to ISO 15189. This guarantees precise and reliable results that meet the highest medical quality standards.
- Stricter data protection: Your personal data is sacred to us. We strictly adhere to the GDPR and are also certified to ISO 27001 for information security. Your test results are processed anonymously and, of course, are visible only to you.
- Personal support and guarantee: We won’t leave you alone with your results. Free coaching with our health experts is included in the price to answer your questions and discuss the next steps. We’re so convinced of the effectiveness of our recommendations that we even offer you a money-back guarantee.
This ensures that your intolerance test is more than just a result. It’s the starting point for a real improvement in your well-being. If you’d like to explore the topic in more depth, also read our detailed article about intolerance testing. This way, you can confidently and knowledgeably take control of your health.
How to interpret your mybody®x report correctly
It’s finally here: your personal results report from your intolerance test. In front of you is an insightful list of foods, each with its own value. But what do you do with all these numbers and charts? Don’t worry, you’re in the right place.
We’ll translate the technical jargon for you and show you what the results really mean for your everyday life. Let’s work together to figure out what your body is trying to tell you and what first steps you can take.
What a high IgG level really means
First things first: A high IgG level for a particular food is not an allergy diagnosis. It also doesn’t mean you have to ban this food from your diet forever. Instead, see it as a valuable signal from your immune system telling you, “Hey, I’m dealing with quite a lot from this food right now!”
Think of it like an overloaded email inbox. Most emails (foods) are processed quickly and unnoticed. But some senders (certain foods) send such a flood of messages that your inbox overflows and your whole system feels stressed. A high IgG level is a sign of exactly this kind of “message flood” that keeps your immune system on its toes.
Understanding the reaction levels
In your mybody®x report, we’ve clearly organized the results into different levels. This gives you a quick overview of where you can start.
- No or mild reaction: These foods are all in the clear. Your body handles them really well.
- Moderate reaction: There’s more going on here. It may be worth taking a closer look at how often you eat these foods and perhaps having them a little less often.
- Strong reaction: These foods are currently putting the greatest demands on your immune system. They’re top candidates for a mindful dietary change that gives your body a well-deserved break.
This classification is your personal compass. It shows you where you can start to give your system a break and get symptoms like bloating, constant fatigue, or skin problems under control. If you’d like to delve deeper into the science behind IgG reactions, read our in-depth article on the blood intolerance test.
Your results aren’t a final verdict, but the starting point for an exciting journey of discovery into your own body. They give you the tools to take action and actively improve your well-being.
Context is key
Sometimes, a high IgG level is simply caused by eating a food very often. Your immune system is constantly dealing with it and produces more antibodies as a precaution. This doesn’t mean the food is “bad” for you, just that taking a break or adding more variety to your plate could be a good idea.
That’s why it’s so important to always consider the results in the context of your personal eating habits. And that’s exactly where we’ll start now. This isn’t about strict deprivation, but about making smart adjustments to your diet.
So, instead of banning foods forever, you’ll next learn the principles of an elimination and rotation diet. This is the first but crucial step in turning the insights from your test into a noticeable improvement in your well-being.
Your action plan after the test for noticeable results
You’re holding your test results in your hands—a great first step! But simply knowing the results is only half the battle. Real change begins now, when you put your mybody®x results into action. Think of this guide as your personal roadmap to turning the results of your intolerance test into an effective plan for greater well-being.
Based on your individual mybody®x results, we'll now show you how to adjust your diet in a targeted way. Don't worry, this isn't about giving everything up forever. Rather, you're giving your body a conscious break so it can regenerate and rebalance.
Phase 1: The elimination diet as a reset for your body
The most important and effective step right after the test is the so-called elimination diet. It may sound strict at first, but it really isn't. Think of it instead as a kind of “reset button” for your gut and immune system.
The principle is very simple: For a manageable period of about four to six weeks, you deliberately avoid the foods for which your test showed a moderate to strong IgG reaction. By removing these potential troublemakers from your diet, you give your overworked immune system the chance to finally calm down. Chronic inflammation can subside and your gut can recover.
Many of our customers notice a real difference after just a few days: Their uncomfortable bloating goes down, their energy returns, and even their skin often visibly improves.
It's important to understand that the elimination phase is not a lifelong sentence. It's a time-limited therapeutic measure. Your goal is to restore balance in your body and lay a healthy foundation for your future diet.
Get creative in the kitchen: Discover alternatives
Avoiding certain foods doesn't mean your meals have to become boring - quite the opposite! See it as a chance to try new things and broaden your culinary horizons.
- Reacting to cow's milk? There are fantastic plant-based drinks made from oats, almonds or coconut. Cheese alternatives made from nuts or seeds are also an exciting discovery.
- Reacting to wheat? Explore the world of pseudocereals like quinoa, buckwheat or amaranth. Lentil or chickpea pasta is not only delicious, but also rich in protein.
- Reacting to chicken eggs? When baking, applesauce, ground flaxseeds (as a “flax egg”) or a ripe banana make great substitutes. You can also whip up a hearty “scrambled egg” with chickpea flour or silken tofu.
You'll be amazed at how many delicious and healthy options there are once you start looking around. Your mybody®x report also gives you a list of all the foods you don't react to - use it as inspiration for your next shopping list!
One intolerance that many people only notice in adulthood is dairy intolerance. A study by the Commercial Health Insurance Fund (KKH) shows that diagnoses of lactose intolerance have risen sharply in Germany in recent years. According to KKH, three times as many women as men are affected, typically reporting gastrointestinal symptoms because they lack the enzyme lactase. If you'd like to learn more about the background, you'll find more insights into the study on lactose intolerance at deutschlandfunk.de.
Phase 2: Targeted reintroduction
After the four to six weeks of the elimination phase comes the most exciting part: provocation or reintroduction. Now you get to play detective and find out which foods really trigger your symptoms and, above all, how much of them you may be able to tolerate after all.
The plan: Reintroduce the foods you avoided one at a time, leaving an interval of two to three days between each one. On the test day, eat a normal portion of the food and carefully observe your body over the following 48 to 72 hours.
It's best to keep a simple symptom diary. Note how you feel. Are your old symptoms returning? Then you've probably identified the culprit. If all is well, you can move on to the next food. This way, you'll gradually create a personal eating plan that works for you.
Professional support for lasting success
The path to greater well-being is a personal journey, but you don't have to take it alone. The results of a food intolerance test are an invaluable tool, but interpreting and acting on them correctly are key to long-term success.
That's exactly why your mybody®x test always includes free coaching with our experienced team of experts. Our coaches will help you read your results correctly, develop a practical action plan with you, and support you with useful tips for everyday life. Talking to your doctor or a nutritionist is also always a good next step to take a holistic approach to improving your health and quality of life.
Frequently asked questions about the food intolerance test
You've now read a lot about the food intolerance test, the different methods, and the right steps to take after receiving your results. Even so, there are often uncertainties and questions about IgG tests. In this final section, we'll clear up the most common doubts.
We want to give you a clear and honest picture so you can make an informed decision about your health.
Why is the significance of IgG tests debated?
You may also have heard that IgG tests are controversial in the scientific community. That's true - and the reason is actually quite simple: An elevated IgG level alone is not proof of an intolerance. It initially just shows that your immune system has come into contact with a food and produced antibodies. That's a perfectly normal process.
Think of the IgG test not as a standalone diagnosis, but as an important piece of the puzzle in your search for clues. It's a strong indication of which foods are currently keeping your immune system especially busy.
And that's exactly where its invaluable worth lies: The test gives you a personal “wanted list” of the main suspects. If you then combine this list with an elimination and challenge diet, as described in the previous chapter, it becomes an incredibly powerful tool. You can use it to find out whether you feel better when you avoid these foods. For thousands of people, this practical approach was the decisive breakthrough.
Do I have to avoid foods that tested positive forever?
No, absolutely not! This is one of the biggest myths surrounding the intolerance test. The goal is never to give things up strictly for life. Rather, it's about giving your body a strategic break for a limited time.
Think of it like a traffic jam in your gut. The elimination diet works like a temporary road closure, allowing the traffic jam to clear. Once the road is clear again, traffic (that is, the reintroduction of foods) is allowed to resume slowly and in a controlled way.
- Temporary avoidance: You avoid foods that trigger a strong reaction for about 4–6 weeks. This gives your immune system time to settle down.
- Targeted reintroduction: Then you reintroduce each food individually to find your personal tolerance threshold.
- Rotation principle: In the long term, rotating certain foods so you eat them only every few days can help. This prevents your immune system from becoming overloaded again.
You'll see: Often, you can enjoy many of these foods again later in moderation without the old symptoms returning. It's about finding a healthy balance, not giving things up permanently.
Why doesn't health insurance cover the test?
IgG tests like the mybody®x test are generally paid for out of pocket and are often referred to as IGeL services (individual health services). The reason is that, as explained above, their validity has not yet been sufficiently demonstrated from a scientific perspective for them to be included in the statutory health insurance benefits catalog. Health insurers generally focus on diagnosing acute, IgE-mediated allergies.
Still, deciding to invest in your health is often one of the best decisions you can make. Many people suffer from vague symptoms for years, while conventional tests fail to find a cause.
The cost of an IgG test is an investment in your quality of life. It can save you years of guesswork and show you a direct path to greater well-being by putting you in control of your diet.
For many of our customers, the clarity they gain and the noticeable improvement in their symptoms make this investment more than worthwhile.
Does an at-home test replace medical advice?
No, and that's a very important point. A self-test like the mybody®x Intolerance Test is not a substitute for a medical diagnosis or treatment. Especially if your symptoms are severe or persistent, you should always see a doctor first to rule out serious conditions.
See the test as a simple, discreet first step on your journey. It's the perfect complement to medical advice, as it gives you specific, personal data to discuss with your doctor or therapist.
- You gain clarity: The test gives you some initial clues and a clear direction for further investigation.
- You become an equal partner: With your test results, you can ask more targeted questions and work with your doctor to develop a plan.
- You take responsibility: You no longer wait passively—you take action. You start your own journey of discovery and learn to better understand your body's signals.
The mybody®x test puts you back in control. You go from being affected by your health to shaping it yourself, and get the tools to make targeted changes and bring more lasting well-being into your life.
Are you ready to stop guessing and take the first step toward greater clarity and well-being? At mybody®x, you'll find the right test to take charge of your health—with a scientific basis and personal support.
Discover your mybody®x blood test now and start your journey toward feeling better in your body.
