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A 20-year-old male asked:

Can irritable bowel syndrome cause vitamin b12 and vitamin d deficiency??

1 doctor answer2 doctors weighed in
Dr. Anne Eglash
Family Medicine 36 years experience
Not likely: Irritable bowel syndrome (IBS) is characterized by bloating, abdominal pain, diarrhea, and/or constipation. The colon appears normal when examined on colonscopy. Because the lining is normal, absorption of nutrients is not impaired by IBS. Lack of vitamin D and B-12 can be due to lack of absorption due to other illnesses, or simply lack of sufficient ingestion via diet-B-12, and lack of sun-vitD.
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Last updated Feb 5, 2019


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