A member asked:

My son (22) had a colectomy, his colon was removed and subsequent j pouch etc. he recently is very fatigue, weightloss etc could this be a b12 defiec?

A doctor has provided 1 answer

Unlikely: B12 absorption and the intrinsic factor that are involved in the process are all part of the small intestine function. The colon is more of a storage area, water retriever than anything else, so loss doesn't often give significant problems. Fatigue is a good reason for an office evaluation.

Answered 7/19/2017

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