Quiz: Food intolerances

Photo of woman holding her belly in pain
Digestive problems like stomach ache, diarrhea, or bloating can be caused by a wide variety of things. What role do dairy products play? When can gluten (in many cereal grains) be harmful? Put your knowledge to the test here.
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Created on March 23, 2026

Next planned update: 2029

Publisher:

Institute for Quality and Efficiency in Health Care (IQWiG, Germany)

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