Lactose intolerance self-test: How to finally get clarity
ca. 4 Minuten
Many people feel unwell after eating or drinking dairy products. They suspect they may have lactose intolerance, but aren’t sure. And until you know the cause, it’s difficult to take targeted action.
In this article, you’ll learn everything you need to know to recognize lactose intolerance. We’ll show you the symptoms, provide simple self-tests, and explain the difference between lactose intolerance and a milk allergy. We’ll also cover modern methods such as the DNA test for lactose intolerance.
What exactly is lactose intolerance?
Lactose intolerance means that your body cannot digest the milk sugar lactose, or can only digest it to a limited extent. This requires the lactase enzyme, which is produced in the small intestine. If this enzyme is missing, the lactose reaches the large intestine undigested, where it ferments and causes typical symptoms.
What symptoms indicate lactose intolerance?
Lactose intolerance symptoms usually appear 30 minutes to two hours after consuming products containing lactose. They include:
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Bloating
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Abdominal pain and cramps
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Diarrhea
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Nausea or vomiting
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Rumbling stomach noises
Not everyone reacts the same way. Sometimes a small amount of lactose is enough to trigger symptoms; sometimes people can tolerate small amounts without any problems.
What is the difference between a milk allergy and lactose intolerance?
The terms are often confused. With a milk allergy, the immune system reacts to the proteins in milk. Even the smallest amounts can trigger severe reactions such as a rash, shortness of breath, or even anaphylaxis.
Lactose intolerance, on the other hand, is a digestive disorder. It is unpleasant, but not life-threatening. If you want to recognize lactose intolerance, it’s important to know this difference.
Am I prone to lactose intolerance?
Many cases are genetic. Lactose intolerance is particularly widespread in Asia, Africa, and South America. In Europe, however, it is less common. Conditions such as Crohn’s disease, celiac disease, or gastrointestinal infections can also cause secondary lactose intolerance.
Lactose intolerance self-test at home
1. Replace milk with lactose-free products
Drink only lactose-free milk for two weeks and monitor your symptoms. If your condition improves, lactose intolerance is very likely.
2. Try low-lactose cheeses
Many aged cheeses contain very little lactose (e.g. Parmesan, Cheddar, Gouda). If you tolerate these better than cream cheese or milk, it suggests an intolerance.
3. Take lactase enzyme tablets
You can also take a lactase enzyme pill before consuming dairy products. If your symptoms improve, this is a clear indication.
Scientific tests for confirmation
DNA test for lactose intolerance
A DNA test shows whether you are genetically predisposed to producing low levels of lactase. While it does not prove an active intolerance, it can help identify the cause. Does a DNA test help with lactose intolerance? Yes – especially when combined with other methods.
Hydrogen breath test
You drink a lactose solution, and your breath is regularly tested for hydrogen. A significant increase indicates that your body is not breaking down lactose.
Lactose tolerance test
Your blood sugar is measured after you consume lactose. If it remains low, this indicates lactose intolerance.
Stool acidity test
Lactose digestion is analyzed using stool acidity, especially in young children. This test is less common, but helpful when there is uncertainty.
What should you do if you have lactose intolerance?
What should you do if you have lactose intolerance after eating? If symptoms occur, taking enzyme tablets or switching to plant-based alternatives can help. In the long term, a lactose-free diet can help prevent discomfort.
Many people affected can tolerate small amounts of lactose. Observe your body's response to find out what it can tolerate.
Probiotic yogurts can also help, as they improve lactose digestion in the gut. Also make sure you're getting enough calcium if you avoid dairy products.
Conclusion:
You can get clarity with a simple lactose intolerance self-test, observation, and, if necessary, a DNA test for lactose intolerance. Recognizing lactose intolerance symptoms can help you effectively relieve discomfort and tailor your diet to your needs.
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