What Exactly Is Gluten?

Reviewed on 1/20/2022
A man in a field holding a wheat stalk in his hand
Gluten is a protein that is found in wheat, rye, barley, triticale (a cross between wheat and rye), in some oats, and in many processed foods.

Gluten is a protein that helps foods maintain their shape that is found in wheat (wheat berries, durum, emmer, semolina, spelt, farina, farro, graham, kamut khorasan wheat, and einkorn), rye, barley, triticale (a cross between wheat and rye), in some oats, and in many prepared foods.

What Foods Contain Gluten?

Gluten is commonly found in foods such as:

  • Breads
  • Baked goods
  • Soups
  • Pasta
  • Cereals
  • Sauces
  • Salad dressings
  • Roux
  • Malt (malted barley flour, malted milk and milkshakes, malt extract, malt syrup, malt flavoring, malt vinegar)
  • Food coloring
  • Beer
  • Brewer’s Yeast

Who Should Avoid Eating Gluten?

Some people should not eat gluten, such as people who have: 

  • Celiac disease
    • A condition that affects the body's ability to break down certain foods
    • Consumption of gluten can make people with celiac disease very sick
  • Non-celiac gluten sensitivity, also referred to as gluten sensitive enteropathy (GSE) or gluten intolerance
    • Similar symptoms to celiac disease, but without the accompanying elevated levels of antibodies and intestinal damage
    • GSE is diagnosed based on symptoms and a negative test for celiac disease
  • Wheat allergy
    • An allergy to protein found in wheat
    • Most often seen in children
  • Dermatitis herpetiformis (DH)
    • A skin rash that results from eating gluten
    • People with celiac disease may also have dermatitis herpetiformis, but people with dermatitis herpetiformis don’t always have celiac

Should I Stop Eating Gluten?

Unless you have a specific medical condition such as those listed above there is no reason a healthy diet cannot include products that contain gluten. Many foods that contain gluten are often quite healthy, such as whole grains. 

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Reviewed on 1/20/2022
References
https://www.uptodate.com/contents/gluten-free-diet-the-basics?search=gluten&source=search_result&selectedTitle=1~150&usage_type=default&display_rank=1

https://www.hsph.harvard.edu/nutritionsource/gluten/

https://celiac.org/gluten-free-living/what-is-gluten/