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Gluten-free diet

Wheat allergy

A wheat allergy happens when the immune system mistakes gluten or some other protein found in wheat for germs. The immune system reaction that follows may cause some of the same digestive symptoms as celiac disease or gluten intolerance. Sometimes a wheat allergy also can cause other symptoms such as itchy welts called hives. If you have a wheat allergy, you likely will benefit from gluten-free foods because they're not made with wheat. But you don't need to cut out other grains with gluten, such as barley and rye.

A gluten-free diet also is popular among people who don't have a gluten-related health condition. The claimed benefits of the diet are improved health, weight loss and more energy. But more research is needed.