Though wheat bran is a nutrient-dense food with many potential health benefits, there may be some disadvantages.

Gluten is a family of proteins that is found in certain grains, including wheat (32Trusted Source).

Most people can ingest gluten without experiencing adverse side effects. However, some individuals may have difficulty tolerating this type of protein.

Celiac disease is an autoimmune disease in which the body mistakenly targets gluten as a foreign threat to the body, causing digestive symptoms like abdominal pain and diarrhea.

Gluten ingestion can also damage the lining of the gut and small intestine in celiac patients (33Trusted Source).

Some people also suffer from non-celiac gluten sensitivity, in which they do not test positive for celiac disease but still feel digestive discomforts after consuming gluten (33Trusted Source, 34Trusted Source).

Therefore, people with celiac disease and gluten sensitivity should avoid grains that contain gluten, including wheat bran.